Posted by jenny on Friday, July 31, 2009 at 5:37pm.
what is the surface area of a sphere if the radius, r, is 6 meters

geometry  Ms. Sue, Friday, July 31, 2009 at 5:40pm
You need another measurement to find the surface area.
http://www.math.com/tables/geometry/surfareas.htm#sphere

geometry  bobpursley, Friday, July 31, 2009 at 5:53pm
Surface area of a sphere is 4 PI r^2

geometry  Ms. Sue, Friday, July 31, 2009 at 5:57pm
Thanks, Bob, I was wrong. I was thinking of a cylinder, not a sphere.
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