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Question

If the area of the base of a cone is 770 cm2and the curved surface area is 814 cm2 then its volume is
  1. 6165cm3
  2. 616/5cm3
  3. 6163cm3
  4. 6162cm3

A
6165cm3
B
6163cm3
C
616/5cm3
D
6162cm3
Solution
Verified by Toppr

Given area of base of cone is 770 sq cm and curved surface area is 814 sq cm
Let radius of cone is r
πr2=770r2=770πr=770π
πrl=814l=814πr
Then volume of cone =13πr2l=13×770π×814πr=6165cm3

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