Q15 of 79 Page 238

The volume of a cone with circular base is 216 π cu.cm. If the base radius is 9 cm, then find the height of the cone.

GIVEN : volume of the cone “V” = 216cu.cm


Base radius of cone “r” = 9cm


we take π =


TO FIND : height of the cone “h” = ?


PROCEDURE :


We know that volume of the cone “V” = × π r2h


Now putting all the values in the above formula, we get


V = × π r2h


216 = × π × (9)2 × h


h = 216 × 3 × = 216 × = 8cm


∴ height of the cone “h” is 8cm.


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