Question

length of a rectangle exceeds its breadth by 4m. if the perimeter of the rectangle is 84 m find its length and breadth

Answer 1

2(l+b) = 84.
l+4 =b. 2(2l+4) =84. b=23

4(l+2) = 84
l+2=21. l=19.

Answer 2

let b= x
l = 4+x

2(l+b)=84
2x +2x +8=84

4x +8=84
4(x+2)=4(21)
x+2=21
x=21-2
x= 19.

b=19.
l= 23.
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