Question

If the perimeter of the rectangle and a square, each is equal to 80 cm and the difference of their areas is 100 sq.cm the sides of the rectangle are

Answer 1

Perimeter of Square = 4s where s = side

Since it’s perimeter = 80 cm therefore the side length = 20 cm

Area of Square = s^2 = 20^2 = 400

Area of Rectangle = 400 + 100 = 500 as stated in the problem.

The side of the square represents the width of the rectangle which is 20 cm.

In finding the length, you must divide the area to the width therefore..

500 / 20 = 25 cm

So.. L=25 cm W=20 cm

Please mark brainliest or thanks if it helped :D

Answer 2

Answer:

Step-by-step explanation:

The answer is 30,10