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How wide is a rectangle 12 inches long with a perimeter of 40 inches?
Wiki User
∙ 13y ago
a rectangle has 4 sides and 2 are the length and are the same length and 2 are the width and are also both the same. perimeter is the measurement off adding up all the side on a rectangle. you know the length is 12 inches so you multiple it by 2 since there are two lengths that are the same size take 40 - 24 = 16inches now since there are 2 widths you divide 16 by 2 so the width of your rectangle is 8 inches
Utiilize Algebra: Here is the Solution;
P= Perimeter, L = Length, and W = Width
P = 2L+2W
(2*12) + (2w) = 40
(24) + (2w) = 40
2w = (40 - 24)
2w = 16
w = 2/16
w = 8
Wiki User
∙ 13y ago
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