Question

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

Answer 1

Let the breadth of the rectangle be x
Then length of the rectangle be x+20
perimeter of the rectangle=100
2(L+b)=100
2(20+x+x)=100
2(20+2x)=100
40+4x=100
4x=100-40
4x=60
x=60/4
x=15
breadth=15
length=15+20
=35