Question

Find the volume of the specified cone. Use 3.14 for pi, and round your answer to the nearest whole number.

Diameter = 5 cm, height = 9 cm
A. 59 cu. cm
B. 25 cu. cm
C. 38 cu. cm
D. 19 cu. cm

Answer 1

The formula for the volume of a cone is 1/3 pi r^2 h
So for this equation...
(1/3)(3.14)(2.5^2)(9) = 58.875
So the answer would be A. 59 cu. cm

Remember that radius is equal to half of the diameter :)

Answer 2

A) 59 cu. cm

Explanation:

diameter = 5cm

Radius = 5/2 = 2.5 cm

Volume of cone =
`(1)/(3)*\pi *r^(2) h`

`=(1)/(3) * 3.14 * 2.5 *2.5 * 9\\\\= 3.14 * 2.5 * 2.5 * 3\\\\= 58.875\\`

= 59 cu cm