Question

Find the volume of a cylinder made by rotating a rectangle with a width of 5 feet and a length of 8. Round to the nearest whole number

Answer 1

The circumference of the cylinder(top circle):

`8 = 2 \pi r`
Solving this we get r = 1.27
The formula for volume of a cylinder is
`V = \pi r^(2)h`.
Since the height is 5(aka the width) and the radius is 1.27

`V = \pi * (1.27)^(2)*5`
We then get the Volume is 25.3225 the we round to the nearest whole number which is 25.

Hope I helped :)