One side of the rectangle is a, the other is 3. Find the perimeter of the rectangle.
| June 26, 2021 | education
To solve this problem, remember that the perimeter of a rectangle is the sum of the lengths of all its sides. Since in a rectangle the opposite sides are equal, then P = 2 * (a + b), where a is the length, b is the width. We calculate what the perimeter is, knowing that one side is equal to a cm, and the other 3 cm.
P = 2 * (a + 3) = 2a + 6 centimeters.
Answer: 2a + 6 centimeters.
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