Question 1129382
r, radius
h, altitude



Original volume,  {{{(1/3)pi*r^2*h}}}


Altered volume,  {{{(1/3)pi*(3r)^2*(h/2)}}}


Form their ratio and simplify.
{{{(9r^2(h/2))/(r^2*h)}}}


{{{(9hr^2(h/2))/(r^2*h)}}}


{{{highlight(9/2)}}}