To find the volume of any prism or cylinder, no matter the shape of the base or if the figure is upright or oblique (slanted sideways), multiply the area of the base by the solid’s height. This idea is captured in the formula \(V=Bh\), where \(V\) is the volume, \(B\) is the area of the base, \(h\) and is the solid’s height. For example, to find the volume of this cylinder, first calculate the area of the circular base using the expression \(\pi r^2\) where \(r\) is the length of the base’s radius. The base has area \(16\pi\) square feet because \(\pi (4)^2=16\pi\). Now we can conclude that the volume of the cylinder is \(80\pi\) cubic feet because \(16 \pi \cdot 5 = 80\pi\).

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