Question

What is the approximate volume of a tree trunk if the trunk is 13 feet tall with a circumference of 4.5 feet?

A.17.16 ft^3
B.21.17 ft^3
C.33.09 ft^3
D.27.14 ft^3

Answer 1

I believe it's 9.4 feet, in my result

Answer 2

((I've used 3.14 as pi))

Diameter = circumference / pi
= 4.5 / 3.14
= 1.43

Radius = diameter / 2
= 1.43 / 2
= 0.72

V = pi * r^2 * h
= 3.14 * 0.72^2 * 13
= 21.17
= B