Answer:
A cone with a radius of 12 units and a height of 6 units =
904.78
A sphere with a diameter of 12 units =
904.78
A sphere with a radius of 9 units =
3053.63
A cylinder with a diameter of 12 units and a height of 27 units =
3053.63
A cylinder with a diameter of 8 units and a height of 18 units =
904.78
A cone with a diameter of 18 units and a height of 36 units =
3053.63
