We need to solve for the radius
circumference = radius * 2 * PI
radius = circumference / (2*PI)
radius = 4.5 / (
6.2831853072
)
radius =
0.7161972439
feet
Formula for cylinder volume:
Volume = π • r² • height
Volume = π • (
0.7161972439)^2 * 12
Volume = PI * 0.5129384922
* 12
Volume 19.3373255857
cubic feet
