A solid right circular cylinder of radius 3 cm and height 12.5 cm is melted and…

MATHEMATICS · Single correct · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes

Problem

A solid right circular cylinder of radius 3 cm and height 12.5 cm is melted and recast into identical solid spheres of radius 1.5 cm. How many spheres are formed? (a)

20

(b)

33

(c)

25

(d)

17

Related theory

Composite Solids
Mensuration
Combination of solids
Conversion between solids (melting and recasting)
Surface Areas and Volumes

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