Question 822486
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Hi,
The surface area of a sphere is 180cm2. What is it's radius
<img src='http://img69.imageshack.us/img69/7421/spherem.png' border='0'/></a>
  {{{4pi*r^2 = (180cm^2) }}}
      {{{r = sqrt((180cm^2)/4pi) }}}  |Using positive solution only for unit measure