Find the volume of the composite figure.
The composite figure is made of a rectangular prism and half of a cylinder.
prism volume = 5 * 11 * 6 = 330 mm^3
half cylinder volume = 1/2 * pi * (5/2)^2 * 11 = 34.375pi mm^3 = 108 mm^3
Total: 330 + 108 = 438 mm^3