EXPLANATION
M9. What is the perimeter of a square with side length 5 cm?
a) 10 cm
b) 15 cm
c) 20 cm
d) 25 cm
ANSWER: c) 20 cm
EXPLANATION:
The answer is c) 20 cm.
The perimeter of a square is the total length of all four sides of the square added together. Since all sides of a square are equal in length, the perimeter of a square with side length 5 cm is 5 cm + 5 cm + 5 cm + 5 cm = 20 cm.
