Shape a is a cone.
Shape b is a cylinder.
Shape c is a cone.
To calculate the volume of the composite figure, you will need to find the individual volumes of each shape and then add them together. The formula for the volume of a cone is (1/3)πr²h, where r is the radius of the base and h is the height. The formula for the volume of a cylinder is πr²h, where r is the radius of the base and h is the height.
So, to find the volume of the composite figure, you would calculate the volume of shape a (the first cone), add the volume of shape b (the cylinder), and then add the volume of shape c (the second cone).