.A rectangle has a length of 20 inches and a width of 12 inches, find the perimeter of the rectangle.

A: 40 inches

B: 56 inches

C: 64 inches

D: 240 inches

Correct Answer : C

To find the perimeter of any rectangle, add all of the sides up:

20 + 20 + 12 + 12 = 64 inches

You could use this formula as well:

P=2l+2w, where P = perimeter,  l = length, w = width

This formula comes from the fact that there are 2 lengths and 2 widths in every rectangle.

P=2(20)+2(12)

P=64 inches

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