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# find the surface area when the radius of a sphere is 5cm the function isV(r)=4*pi*r^2 where pi= 3.1416 start?

by substituting r=5 into the equation then simplify 2ab 3dg 4gh

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- Roger the MoleLv 71 decade agoFavorite Answer
Given:

area = 4*pi*r^2

r = 5cm

pi = 3.1416

area = 4*3.1416*5^2 = 4*3.1416*25 = 314.16 cm^2

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