Multiply the area of the base times the height of the cylinder to find the volume. Another way to calculate this is to use the perimeter P and the area A of the base shape. MV so V M Make sure to express density in units compatible with the mass.
For this type of figure one barely needs a calculator to do the math.
Volume 13 b2h. Volume of a cube side times side times side. Whereas to find the volumes of complicated shapes one can use integral calculus. Phone support is available Monday-Friday 900AM-1000PM ET.