The length of a rectangular park is thrice its breadth. If the perimeter of the park is 168 meters. Find its dimension?

Let the length and breadth of the rectangular park be l and b respectively.

Given, l = 3b  ........ (1)

Also, Perimeter of the park = 168 m

⇒ 2 (l + b) = 168

⇒ 2 (3b + b) = 168

⇒ 2 (4b) = 168

b = 21 m

l = 3 (21) = 63  [ from (1) ]

∴ Length and Breadth of the rectangular park are 63 m and 21 m respectively.

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