2
304.8 mm = 1 ft (exactly) → 280 mm = 280 / 304.8 ft ≈ 0.92 ft (≈ 11 inches)
30 x 45 what? inches, mm's. trick question :) If simply feet, length times width. 30sq. ft. x 45sq. ft. = 1350sq. ft.
25.4 mm = 1 inch; four ft, 7 in = 55 in; multiply 25.4 by 55 to solve: 25.4 x 55 = 1397 mm
150 sq ft = 13.94 sq metres, approx. That area would require 68.8 or 69 slabs. However, this assumes that the area to be covered is "well-behaved" and that wastage is kept to a minimum.
2.435 ft = 742.188 mm
2 ft = 609.6 mm
140 mm = ~0.459 ft
12 ft = 3,657.6 mm
5.8 ft = 1767.84 mm
there's 1'076.88 mm in 5.6 ft
1219 mm
its 812.8 mm
304.8 mm = 1ft ⇒ 180 mm = 180 ÷ 304.8 ft ≈ 0.59 ft ≈ 7.1 in
914.4 mm in 3 ft
1900 mm = 6.23 ft
1 ft = 304.8 mm (exactly) 50 mm = 50 ÷ 304.8 ft = 125/762 ft ≈ 0.164 ft