A solid metallic sphere of radius 15 cm is melted and recast into a cylinder of radius 10 cm. What is the height of this cylinder? -
Answer & explanation
Correct answer: option 4
Volume of the sphere = Volume of the cylinder
\(\frac{4}{3}\) \(\pi \) r₁³ = \(\pi \)r₂² h
\(\frac{4}{3}\) x 15 x 15 x 15 = 10 x 10 x h
h = 45 cm