To calculate the volume of the cone-shaped pile of dirt, we need to use the formula:
Volume = (1/3) x π x r^2 x h
where:
π = 3.14 (pi)
r = radius of the base of the cone = 4 yards
h = height of the cone = 12 yards
Substituting these values into the formula, we get:
Volume = (1/3) x 3.14 x 4^2 x 12
Volume = 200.96 cubic yards
So the pile of dirt has a volume of 200.96 cubic yards.
Now, we need to find out how many truckloads are required to transport this dirt. We are given that each truck can carry 6.2 cubic yards of dirt. So we can calculate the number of truckloads as:
Number of truckloads = Volume of dirt / Volume of each truckload
Number of truckloads = 200.96 / 6.2
Number of truckloads ≈ 32.42
Since the number of truckloads must be a whole number, we need to round up to the nearest integer. Therefore, the trucking company will need 33 truckloads to transport the pile of dirt.