I couldn’t figure that one out as well but I picked 80 square feet
You were right 24 is the answer. :)
Answer: Option C.
Step-by-step explanation:
The volume of a sphere can be calculated with this formula:

Where "r" is the radius.
You can observe in the figure that the value of the radius of this sphere is:

Then you can substitute this radius into the formula
.
Therefore, the volume of the sphere shown in the figure is:

