Find the surface area of the sphere.
a.
Answer
Without the radius of the sphere, we cannot calculate the surface area. If we had the radius, we could use the formula \(\boxed{4\pi r^2}\) to calculate the surface area.
Step 1 ：The surface area of a sphere is given by the formula \(4\pi r^2\), where r is the radius of the sphere. However, the question does not provide the radius of the sphere. Therefore, we cannot proceed to calculate the surface area without this information.
Step 2 ：If we had the radius, we could simply substitute it into the formula and calculate the surface area. For example, if the radius was 5 units, the surface area would be \(4\pi(5)^2 = 100\pi\) square units.
Step 3 ：Without the radius of the sphere, we cannot calculate the surface area. If we had the radius, we could use the formula \(\boxed{4\pi r^2}\) to calculate the surface area.
