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3) If a hollow sphere has a volume of 49 m3 and the inner empty space...

3) If a hollow sphere has a volume of 49 m3 and the inner empty space has a volume of 25 m3,

A) What is the outer radius?

B) What is the inner radius?

C) What is the outer surface area?  

D) What is the weight of the sphere if the density is 0.917 × 103 kg/m3

E) What is the sphere made of?

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