One side of a rectangle is 11 times smaller than the other find all sides of a rectangle if the perimeter is 144.
July 29, 2021 | education|
Formula for finding the perimeter of a rectangle:
P = 2 * (a + b).
Let one side of the rectangle be x, then the second is 11x.
Let’s compose and solve the equation:
2 * (x + 11x) = 144;
2 * 12x = 144;
24x = 144;
x = 144: 24;
x = 6 (cm) – one side.
6 * 11 = 66 (cm) – the second side.
Answer: one side of the rectangle is 6 cm, and the other is 66 cm.
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