Question

The areas of a square and rectangle are equal. If the side of the squareis 20 cm and the breadth of the rectangle 10 cm, find the length of the rectangle and its perimeter.

Answer 1

Let the area be x
Area of square=Side*Side
=20cm*20cm=400cm sq.
Area of rectangle =Length*Breadth
Area=400cm sq.
400cm sq. = Length*10cm
400cm sq./10cm=length
40cm
Length=40cm
Perimeter =2(l+b)
=2(40+10)
=2*50
=100cm