Question 816892
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Find the height and surface of the right circular cylinder 
with the height equal to the diameter. height=2r
<img src='http://img834.imageshack.us/img834/5854/cylinderg.png' border='0'/></a>
{{{S = 2pi*rh + 2pi*r^2}}}
{{{S = 2pi*r*2r+ 2pi*r^2}}}
{{{S = 4pi*r^2+ 2pi*r^2}}}
{{{S = 6pi*r^2}}}
V = 128&#960; cm^3 = {{{pi*r^2h}}}
V= {{{pi*r^2*2r = 2pi*r^3 = 128pi cm^3}}}
  {{{2pi*r^3 = 128pi cm^3}}}
       {{{r^3 = 64}}}, r = 4cm
h = 8cm
{{{S = 6pi*r^2 = 6pi*16 = 96pi}}}cm^2