Question

The length of a rectangular Park in thrice its breadth. If the perimeter of the park is 168 meters, find its dimension

Answer 1

Let the breadth of rectangle be x

so length=3x

as we know that

perimeter of rectangle=2(length+breadth)
168=2(x+3x)

168=8x

x=21

3x=63

so length and breadth are 63 m and 21 m

Answer 2

L=3b
B=b
Perimeter
2(3b+b)=168
4b=168/2=84
b=84/4=21
L=63