Question

What is the volume of a right circular cone whose height is twice of its base diameter? The sum of height and diameter is 21.

ANSWER STEP BY STEP AND GIVE ME A LOGICAL ANSWER OR I WILL REPORT YOU.

Answer 1

Answer:

Step-by-step explanation:

Let base diameter d = x

Then, h = 2x and r = x/2

h + d = 21

x + 2x = 21

3x = 21

x = 21/3 = 7

d = 7, h = 14, r = 7/2

V = πr^2h/3

V = 22/7*7/2*7/2*14/3

V = 179.67