r=1inch

The surface area of a sphere is equal to 4 times Pi π times the radius squared.

4π⋅(radius)2

Substitute the value of the radius r=1 into the formula to find the surface area of the sphere. Pi π is approximately equal to 3.14.

4⋅π⋅12

One to any power is one.

4π⋅1

Multiply 4 by 1.

4π(in)2

Find the Surface Area sphere (1inch)