Question

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

Answer 1

let breadth be x
length =x+4
p=2(l+b)
84=2(x+4+x)
84=2(2x+4)
84/2=2x+4
42-4=2x
38=2x
19=x
length =x=19m
breadth=x+4=19+4=23