None but 20 mm = 2 cm
many sq.m in 6900mm
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1 sq km = 1,000,000,000,000 sq mm
Since one cm. = 10 mm., one square cm. = 10 x 10 = 100 sq. mm.
20 sq cm = 20*100 sq mm = 2000 sq mm
5000 mm * 1800 mm = 96.875 sq feet (to 3 dp)
9 square feet = 1 square yard so 310 sq ft = 310/9 = 34.44... sq yards.
1,000,000 sq mm
None but 20 mm = 2 cm
480 sq mm = 0.00516668 sq ft
1800 sq ft = 167.2 sq metres.
4.13
many sq.m in 6900mm
3,500 mm = 37,673.7 ftft
1 sq ft = 92903 sq mm
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