Consider a sphere and a circle of the same radius. What is the ratio of the area of the circle to the total surface area of the sphere?
If we take a circle and a sphere of the same radius, then the surface area of the sphere is ___ times the area of the circle.
If a circle and a sphere have the same radius, then CSA of sphere is times the area of the circle.
The ratio of the total surface area of a sphere and a hemisphere of the same radius is