The perimeter of the square is 28 cm. What will be the area of the square if its side is lengthened by 2 cm.
| February 7, 2021 | education
The first step is to find the length of the side of the square, knowing that its perimeter is 28 centimeters. The perimeter of a square is equal to the sum of the lengths of all its four sides.
a = 28/4 = 7 cm.
The next step is to increase the obtained value of 7 cm by 2 cm.
7 + 2 = 9 cm.
Let’s calculate what is the area of a rectangle with a side length of 9 centimeters. The area of a rectangle is equal to the square of its side.
S = 9² = 9 * 9 = 81 cm².
Answer: 81 cm².
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