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OpenStudy (anonymous):
help please!!! If the surface area of a sphere is 100π cm2, what is the radius?
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OpenStudy (anonymous):
surface area of the sphere=4*pi*r*r where r is the radius of the sphere..
OpenStudy (anonymous):
I dont get it, whats the answer
OpenStudy (anonymous):
calculate.... r=sqrt(100*pi/4*pi)
OpenStudy (anonymous):
dont have a calcuter:(
OpenStudy (anonymous):
sqrt(25)=5 radius of the sphere=5
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