EM-2223
Volume and surface area of solids
E Math · Secondary 4 · Medium · Volume and surface area of solids
A solid metal rod is in the shape of a cylinder of radius 3 cm and height 20 cm. The metal is melted and recast into identical solid spheres, each of radius 1.5 cm. Using the volume formulas for a cylinder and a sphere, how many spheres can be made from the rod?
- 32
- 36
- 40
- 48
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