501 Geometry Questions

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