Question 815496
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
<a target='_blank' title='ImageShack - Image And Video Hosting' href='http://imageshack.us/photo/my-images/69/spherem.png/'><img src='http://img69.imageshack.us/img69/7421/spherem.png' border='0'/></a>
determine the volume of a sphere with a radius of 21cm.
  V = {{{(4/3)pi(21cm)^3}}}