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PilotLPTM [1.2K]
3 years ago
11

How do I find the length and the width?

Mathematics
2 answers:
stiv31 [10]3 years ago
8 0
Online calculator to calculate the dimensions (length<span> and </span>width<span>) of a rectangle given the area A and perimeter P of the rectangle. Then these equations are solved for L and W which are the </span>length<span> and </span>width<span> of the rectangle. Enter the perimeter P and area A as positive real numbers and press "enter".</span>
Gnesinka [82]3 years ago
4 0
A = L * W
A = 91
L = W + 6

91 = W(W + 6)
91 = W^2 + 6W
W^2 + 6W - 91 = 0
(W - 7)(W + 13) = 0

W - 7 = 0
W = 7

W + 13 = 0
W = -13.......extraneous solution...this one does not work

so the width is 7 inches <====
L = W + 6
L = 7 + 6
L = 13...and the length is 13 inches <====

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