First, V=volume, B=base area, H=prism height, r=radius, and h=cylinder height
The volume of a three-dimensional figure represents how many cubed units can fit into the figure. To find the volume of a prism, multiply the base area times the prism height( V=BH ).
Example 1:V=BH
The base area would be base times height since the base is a parrallelogram. So, 4 x 5 equals 20. Next, the height is 6. So, now our equation is V=20 x 6. Then, the volume is 120cm cubed.
To find the volume of a cylinder, multiply pi times the radius squared times the height( V=Pi x r squared x h ).
Example 2:V=Pi x r squared x h

First, the diameter is 13, so the radius is 6.5, and 6.5 squared is 42.25. Next, the cylinder height is 6. So, Pi x 42.25 x 6 is 253.5Pi ft cubed.
By Matt N