Question 919214

A cylinder with radius {{{r}}} units and height {{{h}}} units has a volume of  cubic units given by:

{{{pi*r^2*h}}}

if a height {{{7in}}} greater than the radius, we have:

{{{h=r+7in}}}....substitute in 

{{{pi*r^2*h}}}

{{{pi*r^2*(r+7in)}}}