The volume of a sphere with radius [tex] r [/tex] is given by the formula,
[tex] V=\frac{4\pi}{3} r^3 [/tex].
Here its is given that [tex] r=620,000\; miles [/tex].
Substituting the numerical value of [tex] r [/tex],
[tex] V=\frac{4\pi}{3} (620000)^3\\
V=998305991926330990.58\;mile^3 [/tex].
The volume in scientific notation is [tex] V=9.98*10^{17}\;mile^3 [/tex].
