The area of the rectangle is 432 cm2. Its width is 8 cm. Find the perimeter of the rectangle.
| December 9, 2020 | education
The area of the rectangle is found by the formula:
S = a * b, where a is the length of the rectangle and b is its width
Substitute the values:
432 = a * 8
Find a:
432/8 = 54 cm – rectangle length
The perimeter is found by the formula:
P = 2 * (a + b)
Let’s find:
P = 2 * (54 + 8) = 2 * 62 = 124 cm
Answer: 124 cm
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