The base of a prism is always rectangular, so the area, A, =lw. l is length, w is width, of the base.
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area of base x height area of base x height
The base of a rectangular prism is just an old familiar 2D rectangle. All the old familiar 2D formulas for rectangles still apply to it.
A triangular prism can be thought of as a stack of triangles. Then the volume is equal to the area of the triangular base multiplied by the height of the prism, or 1/2 length * width * height.
The volume of a prism is the area of the base (or the cross section of the prism that is perpendicular to the height) times the height.V = Ab * h
a triangular prism is different from a rectangular prism because: their names are different a triangular prism has a triangle for its' base a rectangular prism has a rectangle base a triangular prism has less sides than a rectangular prism a rectangular prism has more sides than a triangular prism