Question

A playground is in the shape of rectangle. The length of rectangle is three times its breadth and it's area is 1728 sq mts. Find the perimeter of the rectangle.

Answer 1

let Length = 3x m
Breadth= x m

Area = 1728
$3x \times x = 1728 \\ {3x}^{2} = 1728 \\ {x}^{2} = 576 \\ x = 24$
therefore length = 24× 3 = 72 m
breadth= 24


perimeter = 2(l+b)
= 2(24+72)
= 192

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