Question

A cuboid of dimensions 22x15x7.5 was melted and cast into a cylinder of height 14 cm what is its cylinder

Answer 1

volume of cuboid= 22*15*7.5 =2475 cc
volume of cylinder = $\pi r ^{2} h$
2475=22/7 *  $r ^{2}$*14
r$^{2}$=2475/44
$r ^{2} =56.25$
r=$\sqrt{56.25$
r=7.5
therefore radius is 7.5 cms