A solid cylindrical rod of radius 4 cm and length 30 cm together with a solid…

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

Problem

A solid cylindrical rod of radius 4 cm and length 30 cm together with a solid hemisphere of radius 6 cm are melted. During the melting, 10\% of the material is lost. The remaining molten material is cast into a single solid cube. What is the approximate length of an edge of this cube? (a) 9  cm9\;\text{cm} (b) 12.5  cm12.5\;\text{cm} (c) 12  cm12\;\text{cm} (d) 11.3  cm11.3\;\text{cm}

Related theory

Browse the problem library