{"id":25959,"date":"2019-03-12T17:04:18","date_gmt":"2019-03-12T11:34:18","guid":{"rendered":"https:\/\/cracku.in\/blog\/?p=25959"},"modified":"2019-03-12T17:04:18","modified_gmt":"2019-03-12T11:34:18","slug":"rrb-ntpc-geometry-questions-pdf","status":"publish","type":"post","link":"https:\/\/cracku.in\/blog\/rrb-ntpc-geometry-questions-pdf\/","title":{"rendered":"RRB NTPC Geometry Questions PDF"},"content":{"rendered":"<h2><span style=\"text-decoration: underline;\">RRB NTPC Geometry Questions PDF<\/span><\/h2>\n<p>Download RRB NTPC Geometry Questions and Answers PDF. Top 25 RRB NTPC Geometry questions based on asked questions in previous exam papers very important for the Railway NTPC exam.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/downloads\/3596\" target=\"_blank\" class=\"btn btn-danger  download\">Download RRB NTPC Geometry Questions PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/pay\/5oeW1\" target=\"_blank\" class=\"btn btn-info \">20 RRB NTPC Mocks &#8211; Just Rs. 149<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Previous Papers [Download PDF]<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 1:\u00a0<\/b>Find the curved surface area of cone of radius 21cm and slant height 42cm ?<\/p>\n<p>a)\u00a02882<\/p>\n<p>b)\u00a02552<\/p>\n<p>c)\u00a02772<\/p>\n<p>d)\u00a02662<\/p>\n<p><b>Question 2:\u00a0<\/b>Which of the following points, lies on the line perpendicular to x-y = 0 ?<\/p>\n<p>a)\u00a0(2 , -3)<\/p>\n<p>b)\u00a0(3 , 2)<\/p>\n<p>c)\u00a0(-3 , 3)<\/p>\n<p>d)\u00a0(-2 , -2)<\/p>\n<p><b>Question 3:\u00a0<\/b>Rajiv Gandhi International Cricket Stadium, Hyderabad, has boundary length of 70 meters from the center of the pitch, After winning the match, players are running with joy along the boundary line. Find the distance run by by a player after the completion of 2.5 rounds ?<\/p>\n<p>a)\u00a0900 m<\/p>\n<p>b)\u00a01000 m<\/p>\n<p>c)\u00a01100 m<\/p>\n<p>d)\u00a01200 m<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/www.youtube.com\/channel\/UCMDJPaiDdRPv2mrEJoLfklA?sub_confirmation=1\" target=\"_blank\" class=\"btn btn-warning \">FREE RRB NTPC YOUTUBE VIDEOS<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-danger \">RRB NTPC Free Mock Test<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 4:\u00a0<\/b>Find the point of intersection of medians of a triangle having vertices A(1,2), (2,3), (3,1) ?<\/p>\n<p>a)\u00a0(1,1)<\/p>\n<p>b)\u00a0(2,1)<\/p>\n<p>c)\u00a0(1,2)<\/p>\n<p>d)\u00a0(2,2)<\/p>\n<p><b>Question 5:\u00a0<\/b>Find the slope of the line joining A (3, -4) &amp; B (-3, 4) ?<\/p>\n<p>a)\u00a0-3\/4<\/p>\n<p>b)\u00a03\/4<\/p>\n<p>c)\u00a0-4\/3<\/p>\n<p>d)\u00a04\/3<\/p>\n<p><b>Question 6:\u00a0<\/b>Find the ratio of the volumes of a sphere of radius 6cm and a cone of height 6cm and radius 4cm ?<\/p>\n<p>a)\u00a09:1<\/p>\n<p>b)\u00a01:9<\/p>\n<p>c)\u00a03:1<\/p>\n<p>d)\u00a01:3<\/p>\n<p><b>Question 7:\u00a0<\/b>Find the length of a tangent, drawn to a circle of radius 4 cm, from a point which is at a distance of 5 cm from the centre ?<\/p>\n<p>a)\u00a04 cm<\/p>\n<p>b)\u00a05 cm<\/p>\n<p>c)\u00a03 cm<\/p>\n<p>d)\u00a02 cm<\/p>\n<p><b>Question 8:\u00a0<\/b>Find the area of trapezium ABCD, AB=7 cm, CD=5 cm &amp; height of trapezium is 4 cm ? It is known that AB is parallel to CD<\/p>\n<p>a)\u00a020 sq.cm<\/p>\n<p>b)\u00a024 sq.cm<\/p>\n<p>c)\u00a028 sq.cm<\/p>\n<p>d)\u00a032 sq.cm<\/p>\n<p><b>Question 9:\u00a0<\/b>Find the slope of a line perpendicular to 5x-3y+2 = 0 ?<\/p>\n<p>a)\u00a05\/3<\/p>\n<p>b)\u00a0-5\/3<\/p>\n<p>c)\u00a0-3\/5<\/p>\n<p>d)\u00a03\/5<\/p>\n<p><b>Question 10:\u00a0<\/b>Find the maximum volume of the sphere that can be inscribed completely in a cuboid of length 10 cm breadth 8 cm and height 7 cm ?<\/p>\n<p>a)\u00a0160 cubic cm<\/p>\n<p>b)\u00a0170 cubic cm<\/p>\n<p>c)\u00a0180 cubic cm<\/p>\n<p>d)\u00a0190 cubic cm<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/railways-ntpc-previous-papers\" target=\"_blank\" class=\"btn btn-alone \">RRB NTPC Previous Papers Download PDF<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-je-previous-papers\" target=\"_blank\" class=\"btn btn-primary \">RRB JE PREVIOUS PAPERS DOWNLOAD<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 11:\u00a0<\/b>The edges of a cuboid are in the ratio 2 : 3 : 4 and its surface area equals 468 sq cm. Find the difference in the length of the longest edge and the shortest edge?<\/p>\n<p>a)\u00a012 cm<\/p>\n<p>b)\u00a03 cm<\/p>\n<p>c)\u00a06 cm<\/p>\n<p>d)\u00a09 cm<\/p>\n<p><b>Question 12:\u00a0<\/b>If the cost of painting a house of 4 walls, having length 6 cm, width 4 cm and height 8 cm, is 480\/-. Then find the cost of painting per sq cm?<\/p>\n<p>a)\u00a02\/-<\/p>\n<p>b)\u00a02.5\/-<\/p>\n<p>c)\u00a03\/-<\/p>\n<p>d)\u00a03.5\/-<\/p>\n<p><b>Question 13:\u00a0<\/b>A sector of a circle subtends 180 degrees at the center. If the radius of the circle is 7 cm, what is the perimeter of the sector?<\/p>\n<p>a)\u00a046 cm<\/p>\n<p>b)\u00a040 cm<\/p>\n<p>c)\u00a036 cm<\/p>\n<p>d)\u00a030 cm<\/p>\n<p><b>Question 14:\u00a0<\/b>The edges of a cuboid are in the ratio 4 : 3 : 2 and the volume of the cuboid is 648 cubic cm. What is the surface area of the cuboid?<\/p>\n<p>a)\u00a0468sq.cm<\/p>\n<p>b)\u00a0446sq.cm<\/p>\n<p>c)\u00a0424sq.cm<\/p>\n<p>d)\u00a0436sq.cm<\/p>\n<p><b>Question 15:\u00a0<\/b>How many cubes of side 2cm can be formed by melting a cuboid of length 6 cm, breadth 4 cm and height 4 cm. ?<\/p>\n<p>a)\u00a012<\/p>\n<p>b)\u00a014<\/p>\n<p>c)\u00a016<\/p>\n<p>d)\u00a018<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/general-knowledge-questions-and-answers-for-competitive-exams-pdf\/\" target=\"_blank\" class=\"btn btn-alone \">18000+ Questions &#8211; Free SSC Study Material<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/blog\/general-science-questions-answers-competitive-exams-pdf-mcq-quiz\/\" target=\"_blank\" class=\"btn btn-info \">Download General Science Notes PDF<\/a><\/p>\n<p><b>Question 16:\u00a0<\/b>If the length of the side of a square is x and that of an equilateral triangle is x+3. Then find the area of square if the perimeters of square and triangle are same ?<\/p>\n<p>a)\u00a036 sq.units<\/p>\n<p>b)\u00a049 sq.units<\/p>\n<p>c)\u00a081 sq.units<\/p>\n<p>d)\u00a0can not be determined<\/p>\n<p><b>Question 17:\u00a0<\/b>Find the ratio of the volumes of a cone of height 4cm, radius 6cm and a cylinder of height 6cm and radius 4cm ?<\/p>\n<p>a)\u00a01:2<\/p>\n<p>b)\u00a02:1<\/p>\n<p>c)\u00a02:3<\/p>\n<p>d)\u00a03:2<\/p>\n<p><b>Question 18:\u00a0<\/b>Find the ratio of the heights of cylinders of same radius, if ratio of their volumes are 2:3 ?<\/p>\n<p>a)\u00a0\u221a2 : \u221a3<\/p>\n<p>b)\u00a03:2<\/p>\n<p>c)\u00a02:3<\/p>\n<p>d)\u00a0\u221a3 : \u221a2<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-primary \">RRB NTPC Free Mock Test<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-je-mock-test\" target=\"_blank\" class=\"btn btn-info \">RRB JE Free Mock Test<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><b>Question 19:\u00a0<\/b>The four walls of a house of height 5m, width 7m, length 10m, are to be painted. Assume that the ceiling and floor are not to be painted. Find the cost of painting if painter charges Rs.2 per sq.m ?<\/p>\n<p>a)\u00a0210\/-<\/p>\n<p>b)\u00a0420\/-<\/p>\n<p>c)\u00a0520\/-<\/p>\n<p>d)\u00a0340\/-<\/p>\n<p><b>Question 20:\u00a0<\/b>A footpath of uniform width is constructed around a square field of side 6 m. The area of the foot path is 28 sq.m. Then find the width of the footpath ?<\/p>\n<p>a)\u00a02 m<\/p>\n<p>b)\u00a01.5 m<\/p>\n<p>c)\u00a01 m<\/p>\n<p>d)\u00a00.5 m<\/p>\n<p><b>Question 21:\u00a0<\/b>There is a cylindrical metal tube of length 5.5 m which is open at both the ends. The external diameter of the tube is 2.8m and the thickness is 0.4m. What is the volume of the metal used in the tube?<\/p>\n<p>a)\u00a0$\\frac{108.78}{7}$ cu.cm.<\/p>\n<p>b)\u00a0$\\frac{134.54}{7}$ cu.cm.<\/p>\n<p>c)\u00a0$\\frac{116.16}{7}$ cu.cm.<\/p>\n<p>d)\u00a0$\\frac{122.32}{7}$ cu.cm.<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-online-test\" target=\"_blank\" class=\"btn btn-primary \"> Daily Free RRB Online Tests for RRB Exams<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/free-gk-tests\" target=\"_blank\" class=\"btn btn-info \">100+ Free Online G.K Tests<\/a><\/p>\n<p><b>Question 22:\u00a0<\/b>Each interior angle of a regular polygon is 144\u00b0. Find the number of sides of the polygon?<\/p>\n<p>a)\u00a08<\/p>\n<p>b)\u00a09<\/p>\n<p>c)\u00a010<\/p>\n<p>d)\u00a012<\/p>\n<p><b>Question 23:\u00a0<\/b>Ram wants to paint his hall. The room is rectangular in shape. Ram does not want to paint the ceiling or the floor. The dimensions of the room is 10 m x 8 m x 6 m. The ceiling has the maximum area among all the surfaces. If the cost of painting 1 square metre is Rs.7, how much should Ram spend to paint the hall?<\/p>\n<p>a)\u00a0Rs. 1512<\/p>\n<p>b)\u00a0Rs. 1348<\/p>\n<p>c)\u00a0Rs. 1728<\/p>\n<p>d)\u00a0Rs. 1624<\/p>\n<p><b>Question 24:\u00a0<\/b>If the perimeter of an equilateral triangle is 30 meters, what is its height?<\/p>\n<p>a)\u00a09.66 mts<\/p>\n<p>b)\u00a08.66 mts<\/p>\n<p>c)\u00a07.66 mts<\/p>\n<p>d)\u00a06.66 mts<\/p>\n<p><b>Question 25:\u00a0<\/b>A and B are complementary angles and A, B and C are supplementary angles. What is the value of C?<\/p>\n<p>a)\u00a00 degrees<\/p>\n<p>b)\u00a045 degrees<\/p>\n<p>c)\u00a090 degrees<\/p>\n<p>d)\u00a0180 degrees<\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-ntpc-mock-test\" target=\"_blank\" class=\"btn btn-info \">Free RRB Daily Practice Set<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/rrb-je-previous-papers\" target=\"_blank\" class=\"btn btn-warning \">Download Current Affairs Questions &amp; Answers PDF<\/a><\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Answers &amp; Solutions:<\/strong><\/span><\/p>\n<p><strong>1)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Curved surface area of cone = $\\pi rl = (22\/7)(21)(42) = 2772$ sq.cm<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>2)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>the line perpendicular to x-y = 0 is x+y = 0&#8212;-(1)<\/p>\n<p>only (-3, 3) satisfies (1)<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>3)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Radius of ground = 70 m<\/p>\n<p>Distance run in 1 complete round = circumference of ground<\/p>\n<p>Distance run in $2\\frac{1}{2}$ complete rounds = $2\\frac{1}{2}\\times$ circumference of ground = $2.5\\times 2\\pi r = 2.5\\times 2(\\frac{22}{7})(70) = 2.5\\times 440 = 1100m$<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>4)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>point of intersection of medians of a triangle is centroid.<\/p>\n<p>Centroid = $(\\frac{x_1+x_2+x_3}{3} , \\frac{y_1+y_2+y_3}{3}) = (\\frac{1+2+3}{3} , \\frac{2+3+1}{3}) = (2 , 2)$<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>5)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>$Slope = \\frac{y_2-y_1}{x_2-x_1} = \\frac{4+4}{-3-3} = -8\/6 = -4\/3$<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>6)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Volume of sphere = $\\frac{4}{3}\\pi r^3 = \\frac{4}{3} \\pi (6)^3 = 288\\pi$<\/p>\n<p>Volume of cone = $\\frac{1}{3}\\pi r^2 h = \\frac{1}{3}\\pi (4)^2(6) = 32\\pi$<\/p>\n<p>Ratio = $\\frac{288\\pi}{32\\pi} = 9\/1$<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>7)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<figure><img decoding=\"async\" class=\"img-responsive\" src=\"https:\/\/cracku.in\/media\/uploads\/blob_P6yrhRr\" data-image=\"blob\" \/><\/figure>\n<p>From the diagram,<\/p>\n<p>$l = \\sqrt{5^2-4^2} = 3$<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>8)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>Area of trapezium = $\\frac{1}{2}(a+b)h = \\frac{1}{2}(7+5)(4) = 24sq.cm$<\/p>\n<p>So the answer is option B.<\/p>\n<p><strong>9)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Slope of given line = 5\/3<\/p>\n<p>Slope of a line perpendicular to given line = -3\/5<\/p>\n<p>So the answer is option C.<\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p><strong>10)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Diameter of sphere = smallest of (10, 8, 7) = 7 cm<\/p>\n<p>Volume of sphere = $\\frac{4}{3}\\pi r^3 = \\frac{4}{3}\\times\\frac{22}{7}\\times(7\/2)^3 \\approx 180$ cubic cm<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>11)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let the edges are 2x, 3x, 4x<\/p>\n<p>Total surface area of cuboid = 468 sq.cm<\/p>\n<p>$2[(2x)(3x)+(3x)(4x)+(4x)(2x)] = 468$<\/p>\n<p>$2[6x^2+12x^2+8x^2] = 468$<\/p>\n<p>$2[26x^2] = 468$<\/p>\n<p>$x^2 = 9$<\/p>\n<p>x = 3<\/p>\n<p>Edges are 2x, 3x, 4x i.e; 6cm, 9cm, 12cm<\/p>\n<p>difference in the length of longer edge and shorter edge = 12 &#8211; 6 = 6 cm<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>12)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Lateral surface area = 2h(l+b) = 2(8)(6+4) = 160sq.cm<\/p>\n<p>Let x be the cost of painting per unit area,<\/p>\n<p>Total cost of painting = 480<\/p>\n<p>160x = 480<\/p>\n<p>x = 3\/-<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>13)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Central angle of a sector is 180\u00ba i,e; the sector is semi-circle<\/p>\n<p>Perimeter = $\\pi r + 2r = (22\/7)(7) + 2(7) = 22 + 14 = 36$<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>14)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Let edges are $4x, 3x, 2x$<\/p>\n<p>Volume = 648<\/p>\n<p>$(4x)(3x)(2x) = 648$<\/p>\n<p>$24 x^3 = 648$<\/p>\n<p>$x^3 = 27$<\/p>\n<p>$x = 3$<\/p>\n<p>Its edges are 12, 9 &amp; 6<\/p>\n<p>Surface area = 2(lb+bh+hl) = 2(108+54+72) = 468sq.cm<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>15)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>no of cubes = (vol.of cuboid)\/(vol.of cube) = (6*4*4)\/(2*2*2) = 96\/8 = 12<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>16)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>4x = 3(x+3)<\/p>\n<p>4x = 3x+9<\/p>\n<p>x = 9<\/p>\n<p>Area of square = x\u00b2 = 9\u00b2 = 81 sq.units<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>17)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Volume of Cone = $\\frac{1}{3}\\pi r^2h = \\frac{1}{3}\\pi (6)^2(4) = 48 \\pi$<\/p>\n<p>Volume of Cylinder = $\\pi r^2h = \\pi (4)^2(6) = 96 \\pi$<\/p>\n<p>Ratio = $48\\pi : 96\\pi = 1 : 2$<\/p>\n<p>So the answer is option A.<\/p>\n<p><strong>18)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Volume of cylinder = $\\pi r^2 h$<\/p>\n<p>$\\frac{h_1}{h_2} = \\frac{V_1}{V_2} = \\frac{2}{3}$<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>19)\u00a0Answer\u00a0(D)<\/strong><\/p>\n<p>Surface area of 4 walls of a enclosed room = [2l+2b]*h = [2(10)+2(7)]*(5) = [34]*5 = 170 sq.m<\/p>\n<p>Cost of painting of 1 sq.m = 2\/-<\/p>\n<p>Cost of painting of 170 sq.m = 170*2 = 340\/-<\/p>\n<p>So the answer is option D.<\/p>\n<p><strong>20)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<figure><img decoding=\"async\" class=\"img-responsive\" src=\"https:\/\/cracku.in\/media\/uploads\/blob_Vje2Dr9\" data-image=\"blob\" \/><\/figure>\n<p>Let x be the width of the path<\/p>\n<p>Area of square filed = 36 sq.m<\/p>\n<p>Then side of the square = 6m<\/p>\n<p>Total area = 36+28 = 64sq.m<\/p>\n<p>(6+2x)(6+2x) = 64<\/p>\n<p>(6+2x)(6+2x) = 8*8<\/p>\n<p>6+2x = 8<\/p>\n<p>x = 1<\/p>\n<p>So the answer is option C.<\/p>\n<p><strong>21)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Let R and r be the outer and inner radius of the cylinder.<br \/>\nHeight, h = 5.5 m<br \/>\nR = 2.8\/2 = 1.4m and r = 1.4 &#8211; 0.4 = 1m<br \/>\nVolume of the metal = $Pi * R^2 * h &#8211; Pi * r^2 * h$<br \/>\n= $ Pi * 1.4^2 * 5.5 &#8211; Pi * 1 * 5.5$<br \/>\n= $ (1.96 &#8211; 1) * \\frac{22}{7} * 5.5$<br \/>\n= $\\frac{116.16}{7}$ cu.cm.<br \/>\nHence, option C is the right choice.<\/p>\n<p><strong>22)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>We know that for a n sided regular polygon, each angle will be 180*(n &#8211; 2)\/n<br \/>\nWe have been given that 180*(n &#8211; 2)\/n = 144<br \/>\n=&gt; 180n &#8211; 360 = 144n<br \/>\n=&gt; 36n = 360 =&gt; n = 10<br \/>\nHence, the polygon has 10 sides.<\/p>\n<p><strong>23)\u00a0Answer\u00a0(A)<\/strong><\/p>\n<p>Excluding the ceiling and the floor, there will be four surfaces to be painted. The area of the 6 surfaces are 80 sq.m , 80 sq.m, 60 sq.m, 60 sq.m, 48 sq.m and 48 sq.m. The ceiling has the maximum area. Therefore, the floor must also have the maximum area. Leaving these 2 surfaces, the surface area to be painted is 60+60 + 48+48 = 216 sq.m<br \/>\nCost of painting this area = 216*7 = Rs. 1512.<br \/>\nTherefore, option A is the right answer.<\/p>\n<p><strong>24)\u00a0Answer\u00a0(B)<\/strong><\/p>\n<p>The length of each side = 30\/3 = 10 metres.<\/p>\n<p><img decoding=\"async\" class=\"img-responsive\" src=\"https:\/\/cracku.in\/media\/uploads\/13_zsalrml.JPG\" \/><br \/>\nSo, we can observe from the diagram below that the height = $\\sqrt{10^2-5^2}$<br \/>\n=8.66 mts<\/p>\n<p><strong>25)\u00a0Answer\u00a0(C)<\/strong><\/p>\n<p>Given A + B = 90 degrees. \u2026. (1)<br \/>\nA + B + C = 180 degrees\u2026.. (2)<br \/>\nSo, from (1) and (2), C = 90 degrees.<\/p>\n<p><a href=\"https:\/\/cracku.in\/pay\/5sUuA\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-25703 size-full\" src=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png\" alt=\"RRB NTPC Mock Test\" width=\"728\" height=\"90\" srcset=\"https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test.png 728w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-300x37.png 300w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-30x4.png 30w, https:\/\/cracku.in\/blog\/wp-content\/uploads\/2019\/03\/RRB-NTPC-Mock-Test-696x86.png 696w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/cracku.in\/free-gk-tests\" target=\"_blank\" class=\"btn btn-info \">Free RRB Online Coaching<\/a><\/p>\n<p class=\"text-center\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.cracku.app&amp;hl=en_US\" target=\"_blank\" class=\"btn btn-danger \">DOWNLOAD APP FOR RRB FREE MOCKS<\/a><\/p>\n<p>We hope this Geometry questions for RRB NTPC Exam will be highly useful for your preparation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>RRB NTPC Geometry Questions PDF Download RRB NTPC Geometry Questions and Answers PDF. Top 25 RRB NTPC Geometry questions based on asked questions in previous exam papers very important for the Railway NTPC exam. Question 1:\u00a0Find the curved surface area of cone of radius 21cm and slant height 42cm ? a)\u00a02882 b)\u00a02552 c)\u00a02772 d)\u00a02662 Question [&hellip;]<\/p>\n","protected":false},"author":41,"featured_media":25965,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[169,125,31,1603,1601],"tags":[489,491,42,1619,1681,1623],"class_list":{"0":"post-25959","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-downloads","8":"category-featured","9":"category-railways","10":"category-rrb-ntpc","11":"category-rrb-ntpc-je","12":"tag-railway-exam","13":"tag-rrb","14":"tag-rrb-mock-test","15":"tag-rrb-ntpc-2019","16":"tag-rrb-ntpc-je","17":"tag-rrb-ntpc-maths"},"better_featured_image":{"id":25965,"alt_text":"RRB NTPC Geometry Questions PDF","caption":"RRB NTPC Geometry Questions 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Top 25 RRB NTPC Geometry questions based on asked questions in previous exam papers very important for the Railway NTPC exam. 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