# The rectangle is 8 cm wide and 3 times longer. Calculate the perimeter of the rectangle.

July 31, 2021 | education

| Let’s calculate the perimeter of a rectangle if its width = 8 cm, and its length is 3 times more.

Let’s find the unknown side: 8 * 3 = 24 cm.

The perimeter is the sum of all sides, since the opposite sides of the rectangle are equal, we calculate it using the formula: P = 2a + 2b.

We get the following expression: 2 * 8 + 2 * 24 = 16 + 48 = 64 cm.

Answer: The perimeter of the rectangle is 64 cm.

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