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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