# The perimeter of the rectangle is 36cm. The sum of the lengths of its three sides is 25cm. What is the area of this rectangle?

January 25, 2021 | education

| 1. Find the length of one of the sides of the rectangle. To do this, subtract the length of three sides from the perimeter. 36 – 25 = 11 cm.

2. The sides of the rectangle are equal in pairs, so the third side will be equal to the first = 11 cm.

3. Find the lengths of the second and fourth sides. To do this, subtract the lengths of the known sides from the perimeter and divide by 2. (36 – 11 – 11) / 2 = 7 cm.

4. Find the area. 11 * 7 = 77 cm square.

Answer: 77 cm square.

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