Question

The figure is made up of a cylinder and a half sphere. What is the volume of the composite figure? Round to the nearest hundredth.

radius: 4mm
cylinder length: 7mm

Answer 1

we know that
[volume of the composite figure]=volume of cylinder + volume hemisphere

volume cylinder=pi*r²*h
r=4 mm
h=7 mm
volume cylinder=pi*4²*7----> 351.68 mm³

volume of hemisphere=(4/6)*pi*r³
r=4 mm
volume of hemisphere=(4/6)*pi*4³----> 133.97 mm³

[volume of the composite figure]=351.68+133.97----> 485.65 mm³