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By definition, the volume of the cylinder is given by:
[tex] V= \pi r^2h [/tex]
On the other hand, we know that the height of the sphere is:
[tex] h = 2r
[/tex]
The height of the sphere is equal to the height of the cylinder, therefore, rewriting the volume of the cylinder we have:
[tex] V= 2 \pi r^3 [/tex]
Substituting the cylinder volume value we have:
[tex] 64= 2 \pi r^3 [/tex]
Then, by definition, the volume of the sphere is given by:
[tex] Vs = \frac{4}{3} \pi r^3 [/tex]
Rewriting we have:
[tex] Vs = \frac{2}{3} 2 \pi r^3 [/tex]
Substituting values we have:
[tex] Vs = \frac{2}{3} 64 [/tex]
Rewriting we have:
[tex] \frac{128}{3} [/tex]
Answer:
The volume of the sphere is given by:
[tex] \frac{128}{3} [/tex]