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Question

The length of a rectangular park is twice its breadth, and its perimeter measures 840 m. Find the area of the park.

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Solution

Let the breadth of the rectangular park be b.
∴ Length of the rectangular park=l=2b
Perimeter = 840 m

840=2 l+b840=2 2b+b840=23b840=6bb=140 mThus, we have:l=2b =2×140 =280 m

Area=l×b =280×140 =39200 m2

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