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1000 sq ft should do it
Da-Lite, the projector screen company has a great calculator here and even includes a brand and model reference.
22.96 acres.
2*(5280 ft.) - 1000 ft. = 9560 ft.
1000 sq metes = 10764 sq ft.
2.30
1 km = 3,280.84 ft
12,000
1000
Answer: 1000 ft² = 0.022956 acres.
Math says 4 1/2 4"x8" bricks are needed to cover 1 sq. ft. So 9 bricks will cover 2 sq ft. That needs to happen 500 times so you need 9x500 or 4500 bricks sized 4"x8" to cover 1000 sq ft.
PF = ( 4.5 lb / 1000 sq ft ) ( 2500 sq ft ) = 11.25 lb fertilizer needed