The length of the rectangle is 8 cm. What is its area if the perimeter is 28 cm.
| June 25, 2021 | education
The length of the rectangle is 8 centimeters.
The perimeter of the rectangle is 28 centimeters.
Area – ? cm2.
Find the width of the rectangle from the rectangle perimeter formula:
P = (a + b) * 2,
28 = (8 + b) * 2?
28 = 16 + 2b,
2b = 12,
b = 6 centimeters.
Therefore, the length of the rectangle = 8 centimeters, the width of the rectangle = 6 centimeters.
Rectangle area:
S = ab,
S = 8 * 6 = 48 cm2.
Answer: 48 cm2.
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