15 lb. 400 sq. ft. 30 lb. 200 sq. ft.
15 ft * 15 ft = 15*15 sq ft = 225 sq ft
15 lb. has 400 sq. ft. 30 lb. has 200 sq. ft.
15# felt is about .030 and 30# felt is about .062..
15 x 18 = 270 sq. ft.
15 lb. 400 sq. ft. 30 lb. 200 sq. ft.
270
200 sq ft = 18.58 square metres200 sq ft = 18.58 square metres200 sq ft = 18.58 square metres200 sq ft = 18.58 square metres
No. 200 sq ft x 200 sq ft is a measure of hyper-area in 4-dimensional space. Space, as we perceive it, has only 3 dimensions and, within it, an acre is a mere 2-dimensional measure.
200 ft * 200 ft = 40000 sq ft = 0.92 acres (approx)
15 ft * 15 ft = 225 sq ft = 20.903184 sq metres15 ft * 15 ft = 225 sq ft = 20.903184 sq metres
9 sq ft = 1 sq yard so 28 ft * 18 ft = 28*18 sq ft = 56*9 sq ft = 56 sq yards.