You can't convert one to the other. Inches is a unit of length, cm2 is a unit of area.
The area would have to be square inches, not inches. The units that can be converted are sq in (in2) and sq cm (cm2), where 1 inch = 2.54 cm and 1 in2 = 6.45 cm2. The answer is 38.71 square centimeters. 1 square inch is equal to 6.4516 square centimeters. So multiply the number of square inches by 6.4516 to convert.
Millimeters ARE thousandths of meters!
1/36
27.53 cm2 approx.27.53 cm2 approx.27.53 cm2 approx.27.53 cm2 approx.
Feet divided by 5,280 = miles