Question

The length of a rectangle is four times its width. If the perimeter of the rectangle is 90 cm, find its area

Answer 1

Answer:

324

Step-by-step explanation:

L = 4W

P = 2L + 2W = 90

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2L + 2W = 90

2(4W) + 2W = 90

8W + 2W = 90

10W = 90

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W = 9

L = 36

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A = 324

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