Surface Area of a Rectangular Prism
A prism has six faces; each face is a rectangle. For every side or face you see,
there is a congruent side you cannot see.
If you pull each face apart, you will see pairs of congruent rectangles.
The surface area of a prism is the sum of the areas of its face areas, or
SA= 2(length ×width) + 2(width ×height) + 2(length ×height). This for-
mula simplifies into:
SA= 2(lw+ wh+ lh)
disassemble
5 ft. 5 ft.
5 ft.
6 ft.
1 ft.
6 ft. 6 ft.
1 ft. 1 ft.
6 ft.
5 ft.
1 ft.
1 ft.
Side
Aa
Side
Cc
Side
Bb
Side
A
Side
B
Side
C
501 Geometry Questions