What is the perimeter of a rectangle if one side is 12cm, and the other is 3cm less than the first?
| February 22, 2021 | education
1) First, find the second side of the rectangle:
12 – 3 = 9 cm.
2) The formulas for finding the perimeter of a rectangle are:
P = 2 (a + b), where a and b are the sides of the rectangle.
Consequently:
2 (12 + 9) = 2 * 21 = 42 cm.
Answer: The perimeter of the rectangle is 42 cm.
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