How do you convert square cm to square mm?

Answer 1

we know by definition that

10mm = 1cm

if we square both sides we get

100mm2 = 1cm2

so if you have an area given in square millimeters, divide by 100 to get the are in square centimeters.

Answer 2

Divide by 100. There are 100 sq mm in a sq cm

Answer 3

1cm = 10mm; 1cm2 = 100mm2