A sphere is a circular shaped 3 dimensional solid figure whose any point on the surface is equidistant to its center. Surface area of sphere is all that area exposed by the sphere outside.

Surface Area formula is given by
Surface Area Formula

Surface area Calculator is a online tool which calculates the surface area of any given sphere if its radius r is entered in the block provided.
Let us analyze the method of finding the surface area of sphere
Step 1: Read the problem and observe the given radius r.

Step 2:
The surface area of sphere is given as S = 4 $\pi$ r2
Substitute the values and get the answer.