REALLY need help with this problem

Assuming that the shape of the atmosphere remains a SPHERE,
all we need to do to solve this problem is calculate the volume of a sphere/ball.
The formula to do so is ...
V = [tex]\frac{4}{3}\pi r^{3}[/tex]
But what is "r" in the equation?
*Remember that "r" is HALF of the diameter
The diameter of this specific hemisphere is 41.6, so the radius would be ...
41.6 ÷ 2 = 20.8
Now let's plug this value into our equation and solve!
V = [tex]\frac{4}{3}\pi 20.8^{3}[/tex]
V = 37,694.6
I hope I helped! Comment below if you have any questions or concerns about my answer and process!
-From: Gabby5792