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find the total surface area of a cone which is made by joing the sides of a sector of a circle with radius 42cm and an angle of 60degree... How this que will be solved??

Anyone solve this question and explain the funda behind it ?

Number Series

What will come in place of question mark (?)

9  41  253  2033  20341  ?

1) 242108

2) 243407

3) 244105

4) 245804

5) 246320

Number Series 

What will come in place of question mark (?)

4  40  162  448  1000  ?

1) 1908

2) 1926

3) 1932

4) 1944

5) 1956

If the radius of a circle is increased by 40% then what will be the percentage increase in its area?

1) 40%

2) 64%

3) 96%

4) 160%

5) None

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