A temple top is a hollow hemispherical dome with an inner radius of 2 units and an outer radius of 3 units. How much concrete (in cubic units) is used to make the top of the temple?
1
\(\frac{17 \pi}{3} \)
2
\(\frac{38 \pi}{3} \)
3
\(\frac{19 \pi}{3} \)
4
\(\frac{19 \pi}{6}\)