The bottom circumference is 21.98 meters, and the height is 1.8 meters. If each cubic meter of sand weighs 1.5 tons, the pile of sand will be broken
Bottom radius = 21.98 / (2 * 3.14) = 3.5
Bottom area = 3.14 * 3.5 * 3.5 = 38.465
Volume = 1 / 3 * 38.465 * 1.8 = 23.079 M3
Weight: 23.079 * 1.5 = 34.6185t