What is the total volume of the oort cloud, in cubic au? (hints: for the purpose of this calculation, you can assume the oort cloud fills the whole sphere out to 50000 au. the equation for the volume of a sphere is 43πr3 where r is the radius.)?

Formula for volume of sphere is:
[tex]V= \frac{4}{3} * r^{3} * \pi [/tex]

Now we insert
r=50000au
[tex]V= \frac{4}{3} * (50000au)^{3} * \pi \\ \\ V=523598775598298.87307710723054658 au^{3} \\ \\ V=5.2* 10^{14} au^{3}[/tex]