Sphere: Surface Area
How to find the surface area of a sphere: formula, 1 example, and its solution.
Formula
A = 4πr2
A: Surface area of a sphere
r: Radius
Exampler = 6, V = ?
Solution
Solution (Detail)
r = 6
Then A = 4⋅π⋅62.
62 = 36
4⋅36 = 144
So the surface area of the sphere is 144π.