Question

The length of a rectangular park is thrice it's breadth if the perimeter of the park is 168 m find the dimensions

Answer 1

Let the width of park be a
Length = 3a

Perimeter of park = 168
=> 2(L+B) = 168
=> a+3a = 84
=> 4a = 84
=> a = 21

Width = 21 cm
Length = 63 cm

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Answer 2

let x be breadth
and 3x be length
perimeter= 2(x+3x)=168
4x=168/2
x= 21
so breadth=21 and length= 63