perimeter of a rectangle is 72 cm and length is 3 times of its breadth find the area of the rectangle
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Given:
Perimeter = 72cm
Length = 3Breadth
l = 3b
We Know That
Perimeter of a rectangle = 2(l+b)
72= 2(3b+b)
36=4b
So,
b=9cm
l = 3b
l = 27cm
Area of a rectangle = lb
= 27×9
= 243cm²
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