Can someone solve and explain, i learned it but i'm confused on this problem

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We must remember the formulas for volume for these different shapes.

Volume of a hemisphere = r³

V = 8³
V = 512
V = 1071.787

Volume of a cylinder = r²h

V = 8² × 40
V = 8042.477

Volume of Silo = 1071.787 + 8042.477 = 9114.264 feet³

Volume of Rectangle = l × w × h

V = 8 × 5 × 4
V = 160 feet³

Truckloads that can fit into silo = 9114.264 ÷ 160 = 56.964 truckloads.

You can round off to whatever you need to.

However, if the workers do outside of what's normally expected, go ahead and tip.