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Question

The length and the breadth of a rectangular park are in the ratio 5 : 3 and its perimeter is 128 m. Find the area of the park.

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Solution

Let the length of the rectangular park be 5x.
∴ Breadth of the rectangular park = 3x
Perimeter of the rectangular field = 2(Length + Breadth)
=2(5x + 3x)
= 16x

It is given that the perimeter of rectangular park is 128 m.
16x=128x=12816x=8 Length of the park=(5×8) m =40 mBreadth of the park=(3×8) m =24 m

Area of the park = (Length × Breadth) sq units

=(40×24) m2=960 m2

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