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hugsandkisses
Find the length of the radius of a sphere with a surface area of 314.16 ft2. A. 5 ft B. 15 ft C. 10 ft D. 2.5 ft
http://answers.yahoo.com/question/index?qid=20110429122012AAeo341
You could've googled it..
\[A=4\pi r^2\]so\[r=\sqrt{\frac{A}{4\pi}}\]plug in the given area A