Question

The breadth of a rectangle is 7 metre lesd than its lenth . Its perimeter is 138metre .then find the area of rectangle.

Answer 1

let length = x
so breadth = x-7
perimeter = 138
2(x+x-7)=138
2x-7=69
2x= 76
x= 38
breadth = 45
area = l *b = 45*38unit square