Question

A solid right circular cylinder of height 1.21m and diameter 28cm is melted and recast into 7 equal solid cubes find the edge of each cube

Answer 1

given, height of cylinder h=1.21m
radius r=28/2cm=14/100m
and this cylinder is recast into 7 solid cubes.
Let the edge of the cube =S,then
Volume of cylinder =volume of 7 cubes
pir^2 h= 7 S^3
S^3=22x14x14x1.21/7x7x100x100

S^3=5217.52/490000
S^3=0.0107
S=cube root of 0.0107
S=0.220metres or
S=22cm