One meter is equal to 1000 millimeters.
The way to consider the relation ship of square meters and millimeters is not to think of them a special units of their own, but simply as squares of the original units. one square meter is equal to one meter squared. Similarly, one square millimeter is equal to one millimeter squared.
Since a square meter equals one meter squared, and one meter is equal to 1000 millimeters, we can say then, that a square meter is equal to (1000mm) squared. Or:
1m = 1000mm
1m2 = (1m)2
1m2 = (1000mm)2
1m2 = 1000000 mm2
So one square meter is equal to one million square millimeters.
2
1 sq m = 100,000,000 sq mm
1 foot = 12 inches = 304.8 mm. So 1 square foot = 304.8 x 304.8 = 92,903 sq mm. 6 sq ft = 557,418 sq mm
20 sq cm = 20*100 sq mm = 2000 sq mm
100 sq mm
1,800 mm x 310 mm = 0.558 sq meters.
There are approx 2.59*10^12 or 2.6 trillion sq mm in one sq mile.
1 cm is equal to 10 mm. So a 10mm x 10mm square would be the same as 1cm x 1cm. That would be 1 square centimeter.
1,000,000 sq mm
None but 20 mm = 2 cm
480 sq mm = 0.00516668 sq ft
1 sq metre = 10.764 sq feet.