A right circular cylinder of radius and height is melted and cast into a cube of…
MATHEMATICS · Multi-part · CBSE · Mathematics · Surface Areas and Volumes · Surface Areas and Volumes
Problem
A right circular cylinder of radius 7cm and height 9cm is melted and cast into a cube of equal volume.
(i) Determine the length of an edge of the cube (correct to one decimal place).
(ii) Taking π=722, calculate the percentage increase in total surface area when the cylinder is converted into the cube. (Give your answer correct to one decimal place.)