Question

A rectangle has a length of x centimeters and a width of 20 centimeters. which expression represents the perimeter of the rectangle?

a. 2x + 20
b. 2x + 20
c. x + 20
d. x + 20 x

Answer 1

The expression that represents the perimeter of the rectangle with a length of x centimeters and a width of 20 centimeters is 2(x + 20).

Explanation:

The perimeter of a rectangle is the sum of all its side lengths. In this case, we have a rectangle with a length of x centimeters and a width of 20 centimeters.

The formula for the perimeter of a rectangle is 2(length + width). So, the expression that represents the perimeter of this rectangle is 2(x + 20).

Therefore, the correct answer is 2x + 40 (option A).