radius = 9 and 4.5
Sphere Volume = 4/3 • π • r³
Entire Outer Volume = 4/3 • 3.14 • 9^3
Entire Outer Volume = 4/3 • 3.14 • 729
Entire Outer Volume =
3,052.08
cc
Inner Core Volume = 4/3 • 3.14 • 4.5^3
Inner Core Volume =
381.51
cc
Outer Layer Volume = (
3,052.08
-381.51) =
2,670.57
cc