Volume and surface area

To calculate the volume of a prism you have to find the cross sectional area

(This is the 2 identical areas usually at the front and back of the shape or can sometimes be the top and bottom)

and then multiply but the distance between these two areas usually the length or height of the prism


Volume = Cross sectional area x length

To calculate the surface area you need to calculate the area of each face (don't forget the ones you may not be able to see in the picture)

Example:




























Volume of a pyramid: