Let x cm – one side, then
11x cm – second side.
By the formula for the perimeter of a rectangle:
P = 2 * (a + b);
Let’s compose and solve the equation:
144 = 2 * (x + 11x);
x + 11x = 72;
12x = 72;
x = 72/12 = 6 (cm) – one side;
11 * 6 = 66 (cm) – the second side.
Answer: One side is 6 cm, the other is 66 cm.
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