About 167.2 m2
418 000 m2 = 4 499 314.55 ft2 (sq ft)
1284 sq ft = 119.29 sq metres (approx).
If 5 litres of cement is used in every sq ft. Then 5 x 1400 sq ft is 7000
Assuming you mean 12 Square Meters (m2)12 m2 x 10.76391 = Answer 129.16692 Sq Ft
48.77369 m2.
1400 sq ft = 130.06 sq metres
15 ft * 17ft = 255 sq ft = 23.69 sq metres.
445.9346m2
1,200 square feet = 111.5 m2
1400
10.7639104 square feet