Question

The length of a rectangle is 20 cm more than its breadth. If the perimeter is 100 cm, find the dimension of the rectangle.

Answer 1

let the breadth be x
therefore length will be 20+x
perimeter= 2(l+b)
therefore p= 2(20+x+x)=100
this implies 20+2x=50
2x=30
x=15 breadth
length = 35

Answer 2

dimension Will be 15cm×35cm
l =35 ,b=15