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What is the radius of a sphere with a surface area of 100 pi cm2
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What is the radius of a sphere with a surface area of 100 pi cm2

User Magic Bullet Dave
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3 votes
I think it is around 23
User Eliu
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The surface area of a sphere is 4r^2pi, so dividing 100 by 4pi gives a result of 25/pi.  Taking the square root and rationalizing the denominator, we have 5sqrt(pi)/pi as the radius of the sphere.
User Carley
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