Question

The breadth of a rectangle is 5cm less than its length,if perimeter of rectangle is 36cm,find the dimensions of the rectangle.

Answer 1

let breadth be b and length be l

b = l - 5

perimeter = 2(l+b)

36 = 2(l + (l-5))

18 = 2l - 5

l = 23/2 = 11.5

b = 6.5

Answer 2

Let the length be x...Then breadth is x-5....perimeter=36cm =x+(x-5)=36 2x-5=36 2x=41 x=41÷2 x=20.5cm=length  Breadth=x-5=15.5cm