Question

A wire of length 86cm is bent in the form of a rectangle such that its length is 7cm more than its breadth find the length and the breadth of the rectangle so formed​

Answer 1

Answer:

2(x+x+7)=86

4x+14=86

4x=72

x=18

Answer 2

Let x be the breadth of the rectangle

Its length = (x+7)

Its perimeter = 2{x+(x+7)}

= 4x + 14

so,

4x + 14 = 86

or, 4x = 72

or, x = 18

hence, breadth of the rectangle so formed = 18 cm and its length = (18+7) = 25 cm.