Calculate the surface area of a sphere using SA = 4πr². Enter the radius to find the total surface area.
Calculate the surface area of a sphere using SA = 4πr². Enter the radius to find the total surface area.
The radius of the sphere.
The surface area of a sphere equals four times pi times the radius squared.
How this calculator works
The surface area of a sphere equals four times pi times the radius squared.
Common questions about this calculator
