Question

What is the best approximation of the volume, in cubic units, of a cylinder of diameter 10 and height 10?

Answer 1

785.4 units³ (nearest tenth)

Explanation:

volume of a cylinder =
`\pi`r²h

where r is the radius and h is the height

diameter of a circle = 2r

where r is the radius

Therefore, 10 = 2r ⇒ r = 5

Therefore, volume =
`\pi` x 5² x 10 = 250
`\pi` = 785.4 units³ (nearest tenth)