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Please explain the solution for Q. 76 in CAT2020 Slot 1 Question Paper. A solid right Circular Cone of ht. 27 cm is cut into 2 pieces along a plane parallel to its base at a ht. 18 cm from the base. it the difference in volume of the two pieces is 225 cc, the volume, in cc, of the original cone is Options: 1. 232 2. 256 3. 264 4. 243

now that the cone is cut into two pieces the new cone's hieght is 9 which is 1/3rd of the orifinal cone and also as height reduced to 1/3rd the radius of the new cone to orignal cone will also be 1/3rd therefore the voolume becomes 1/27.. now the new cone's volume is V then the original cone is 27 i.e the frustrum is 26V now as per question 26V-V=225 v comes to be 9 therefore 27V( original cone volume= 27V i.e= 243