or 40 cm x 45 cm = 15.748 inches x 17.7165 inches
How many inches is 40 x 45 cm? The answer to this question is that 40 x 45 cm is equal to 708.6614 inches. If you want to calculate the area, then the answer is 40 cm x 45 cm equals 15.748 inches x 17.7165 inches, and the final calculated area is 278.999442 square inches.