Acereal company packs its oatmeal into cylindrical containers. the height of each container is 10 inches, and the radius of the bottom is 4 inches. what is the volume of the container to the nearest cubic inch?

Volume = Area of the base x height
To find the area of the base (the circle on the top or bottom), we use the formula
A = π r²
A= π 4²  = π 16
Now multiply by 10 (the height) and we get  10 x π x 16 or 160π in³

Some teachers allow you to leave the answer in π units. Other want you to  multiply it by 3.14

So the answer is 160π in ³  or 502.4 in ³