A solid cylindrical iron rod of length 120 cm and diameter 6 cm is melted and recast…
MATHEMATICS · Multi-part · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes
Problem
A solid cylindrical iron rod of length 120 cm and diameter 6 cm is melted and recast into identical solid hemispherical balls of diameter 3 cm.
(i) Find the volume of iron in the original rod.
(ii) Calculate the number of hemispherical balls formed.
(iii) If each ball is sold for Rs 12, determine the total revenue obtained from selling all the balls.