Posted on January 29, 2010.
How many bags of sand I need for my lawn? I need 4 inches deep for a lawn of 85 square meters. How many bags of 25 kg of sand does it take?
4cm (0.04 m) x 85 = 3.4 cubic meters
1.6 tons of sand = 1 cubic meter
Therefore, 3.4 cubic feet = 3.4 x 1.6 tons = 5.4 tons
! t = 1000 kg = 4 x 250 kg bags
Therefore, 5.4 tons = 5.4 x 4250 = 21.6 kg bags bags