Answer:
Surface area = 50.27 square feet
Explanation:
The formula for surface area (SA) of a sphere is
SA = 4πr^2, where r is the radius.
Although we're not told the radius, we know that C stands for the circumference and the formula for circumference is
C = πd
We know that the radius is half the diameter and since the circumference of the circle is 4π, the radius must be 2 as 4 /2 = 2
Since we now know that the radius of the circle is 2 feet, we can find the volume by plugging it into the formula
SA = 4π * (2)^2
SA = 4π * 4
SA = 16π
SA = 50.26548246
SA = 50.27 square feet