The width of the rectangle is 5 cm, and its length is 3 times its width. What is the perimeter of this rectangle?

univerkov | August 17, 2021 | education

Given: rectangle, b = 5 cm, a =? cm 3 times> b.

Find: P =? cm.

Solution:

1) First, find the length of the rectangle:

a = b * 3 = 5 * 3 = 15 cm.

2) Now we write down the formula for the perimeter of the rectangle: P = (a + b) * 2,

P = (15 + 5) * 2 = 20 * 2 = 40 cm.

Answer: P = 40 cm.

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