Question

Which of the following expressions can be used to find the perimeter of the square? All sides are the same length. A. 4 x 9. B. 9 x 9. C. 9 + 9 +9 +9. D. 4 + 4 +4 +4.

Answer 1

Explanation:

The formula for the perimeter of a square of side length s is P = 4s.

A. 4 x 9. Incorrect. There are 4 sides, not just 2.

B. 9 x 9. Incorrect. There are 4 sides, not just 2.

C. 9 + 9 +9 +9. This would be the perimeter of a square of side length 9.

D. 4 + 4 +4 +4. This would be the perimeter of a square of side length 4.