Answer:
[tex]V=3052.08\ in^3[/tex]
Step-by-step explanation:
Given that,
The diameter of the ball, d = 18 inches
Radius, r = 9 inches
We need to find the air in cubic inches is in the ball when it is filled. The volume of a sphere is given by :
[tex]V=\dfrac{4}{3}\pi r^3\\\\=\dfrac{4}{3}\times 3.14\times (9)^3\\\\=3052.08\ in^3[/tex]
So, [tex]3052.08\ in^3[/tex] of air is in the ball.