Question 1142807
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How can a sphere be a semicircle?  Do you mean that you want the volume of a hemisphere centered at the origin?  And how can you describe points on a sphere using only ordered pairs? A sphere is a 3-dimensional object and must be graphed in 3-space using ordered triples.  Your question is nonsense.
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
{{n}\choose{r}}
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