Geometry · Classes 8, 9, 10
Sphere Surface Area
Surface area of a sphere.
FORMULA
\(S=4\pi r^2\)
Try the calculator
Enter values to see a result and calculation steps.
Worked example
r=3 ⇒ 36π
Understand this formula
Surface area of a sphere.
Check measurement units, mathematical domains and rounding before applying any result in an examination.