A sphere, a cylinder and a cone have the same diameter. The height of the cylinder and also the cone are equal to the diameter of the sphere. Find the ratio of their volumes.
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4/3πr³ : 1/3πr²h : πr²h
4/3(d/2)³ : 1/3(d/2)²d : (d/2)²d
4/3 × d³/8 : 1/3 × d²/4 × d : d²/4 × d
4/3 × d³/8 : 1/3 × d³/4 : d³/4
4/3 × 1/2 : 1/3 : 1
2 : 1 : 3
4/3(d/2)³ : 1/3(d/2)²d : (d/2)²d
4/3 × d³/8 : 1/3 × d²/4 × d : d²/4 × d
4/3 × d³/8 : 1/3 × d³/4 : d³/4
4/3 × 1/2 : 1/3 : 1
2 : 1 : 3
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