The perimeter of the rectangle is 56 cm, and one of its sides is 7 cm. Find the area of the rectangle.
| September 2, 2021 | education
1). Let’s take the second side of the rectangle as X.
2). Based on the condition of the problem, we compose the equation:
2 (X + 7) = 56;
X + 7 = 28;
X = 28 – 7 = 21 cm;
3). Let’s calculate the area of the rectangle:
7 * 21 = 147 cm ^ 2
Answer: The area of the rectangle is 147 cm ^ 2.
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