A shot-put made of iron with a diameter of 12 cm is melted into a solid cylinder with a height of 2 cm. What is the diameter of the cylinder made?
24 cm
Volume of the shot-put (sphere) = (4/3) × π × (6³)
= (4/3) × π × 216 = 288π cm³
Volume of the cylinder = π × r² × h
288π = π × r² × 2
r² = 144
r = 12 cm
Diameter of the cylinder = 2 × 12 = 24 cm
Thus, the correct answer is 24 cm.
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