Question

Find the volume of the figure. Express answers in terms of pi then round to the nearest whole number.

Answer 1

Below

Explanation:

Volume of a cylinder = area of end X height = pi r^2 * h

r = 4 in h = 10 in

volume = pi (4)^2 * 10 = 160 pi in^3 or ~ 503 in^3

Answer 2

160π in.³

Explanation:

Get the circle area then multiply for the height. In the end, devide the result by 3,14 (π).

π* . r² 50,24 . 10*
π* . 4² 502,40 in.³ (cylinder volume)
50,24 (circle area)

obs: 502,4 leads you to a non-comma π result, considering π as 3,14. If you round, the correct way will be transforming into 502. But 502/3,14 is equal to 159,87..., infinite non-repetitive numbers.

Result in π = 160π* in.³

r - circle radius

10* - height

π* - 3,14 (Used that way)