The length of the rectangle is 12 dm, which is 2 times less than the side of the square.

The length of the rectangle is 12 dm, which is 2 times less than the side of the square. The width of the rectangle is 7 dm less than its length. How much is the area of a rectangle less than a square?

1) What is the width of the rectangle?

12 – 7 = 5 (cm).

2) What is the area of the rectangle?

S = 12 * 5 = 60 (cm ^ 2).

3) What is the side of the square?

12 * 2 = 24 (cm).

4) What is the area of the square?

S = 24 * 24 = 24 ^ 2 = 576 (cm ^ 2).

5) How much is the area of the rectangle less than the square?

576 – 60 = 516 (cm ^ 2).

Answer. At 516 cm ^ 2.