A cone-shaped yellow sand pile with a bottom circumference of 25.12m is known to weigh 1.49 tons per cubic meter. If it is transported by a truck with a load of 5 tons, How many times can it be delivered?

Radius 25.12 △ 2x3.14 = 4m
Volume 1 / 3x4x3.14x3 = 50.24m3
It needs 50.24x1.49 △ 5 ≈ 15 times
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