Question

If a spherical baseball has a diameter of 7 cm, calculate the volume of the ball.

Answer 1

\[V=4/3*\pi*x^3\]
\[V=1438.8 cm^3\]

Answer 2

The volume of a sphere is:
\[\frac{4}{3}\pi r^3\]
in this case r is 3.5 cm
so the volume of the baseball is:
\[\frac{4}{3}\pi (3.5)^3 = 179.6 cm^3\]
to 4 sig figs.

Answer 3

I think the solution by PJW may have been calculated with r = 7.