Which square has a side length closest to 12 centimeters?

A. a square with an area of 160 cm^2
B. a square with an area of 48 cm^2
C. a square with an area of 150 cm^2
D. a square with an area of 3 cm^2

C. a square with an area of 150 cm^2

To find the side length of a square with an area of 150 cm^2, we take the square root of 150 which is approximately 12.247 cm. This is the closest to 12 cm compared to the other options.