or 40 cm x 40 cm = 15.748 inches x 15.748 inches
How many inches is 40 x 40 cm? The answer to this question is that 40 x 40 cm is equal to 629.9212 inches. If you want to calculate the area, then the answer is 40 cm x 40 cm equals 15.748 inches x 15.748 inches, and the final calculated area is 247.999504 square inches.