geometry
posted by jenny .
what is the surface area of a sphere if the radius, r, is 6 meters

geometry 
Ms. Sue
You need another measurement to find the surface area.
http://www.math.com/tables/geometry/surfareas.htm#sphere 
geometry 
bobpursley
Surface area of a sphere is 4 PI r^2

geometry 
Ms. Sue
Thanks, Bob, I was wrong. I was thinking of a cylinder, not a sphere.
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