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We must remember the formulas for volume for these different shapes.
Volume of a hemisphere = [tex] \frac{2 \pi }{3} [/tex]r³
V = [tex] \frac{6.28}{3} [/tex]8³
V = [tex] \frac{6.28}{3} [/tex]512
V = 1071.787
Volume of a cylinder = [tex] \pi [/tex]r²h
V = [tex] \pi [/tex]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.
