the perimeter of rectangle is 72 cm. the length is 3 times the width.find the area of rectangle?
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Step-by-step explanation:
LET WIDTH BE X
SO LENGTH WILL BE 3X
X+X +3X+3X = 72
8X = 72
X = 9
WIDTH = 9 cm
LENGTH = 3 (9) = 27 cm
AREA = 9× 27= 243 cm2
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