1,200
60x20=120 30x40=120
1,200 square meters equals 12,920 square feet.
To calculate the amount of sand needed to fill a 60x20 sand school, you first determine the volume. Assuming the sand school is 0.1 meters deep, the volume would be 60m x 20m x 0.1m = 120 cubic meters. The amount of sand required would be approximately 120 cubic meters, though it's advisable to order a little extra to account for settling.
Well you have 60 seconds and 20 minutes so 60x20 soo 1,200 1,200