Question 805370
The volume of a sphere is {{{V=(4/3)pi*R^3}}}
The volume of a cylinder is {{{V=pi*R^2*H}}}
Equating the two volumes gives {{{(4/3)pi*R^3 = pi*R^2*H}}}
If we divide both sides by {{{pi*R^2}}} we get
{{{H = (4/3)R}}}