Question

When length and breadth of a rectangle increased by 2cm, area of the rectangle increased by 72cm2. Find the parameter of the rectangle?

Answer 1

Answer:

Step-by-step explanation:

Let the length and breadth of rect. Be x and y

Case:1

area=xy

Case:2

Length =x+2

Breadth=y+2

Area=(x+2)(y+2)

xy +72=xy+2x+2y+4

2x+2y=72-4+xy-xy

2x+2y=68

2(x+y)=68

Hence, perimeter =68