1. Copyright 2011 Davitily

2. Finding the Surface Area of a Regular Prism
Step 1:
Find the dimensions of the sides.
Step 2:
Substitute and multiply.
Step 3:
Add.
Step 4:
Write the units.
Surface Area = 2(length x width) + 2(length x height) + 2(width x height)
Step 1:
Length is 4
Height is 7
Width is 3
4 in
7 in
Step 2:
Substitute and
multiply
3 in
Area = 2(4 x 3) + 2(4 x 7) + 2(3 x 7)
Area = 2(12) + 2(28) + 2(21)
Step 3:
Add
Area =
The surface area is simply the sum of all of the 6 faces.
Area = 122
in 2
Step 4:
Write the units

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