Sphere Surface Area Calculator
Compute the surface area enclosing a sphere using the formula 4πr².
Use for estimation only; double-check values for critical applications.
Examples
- Radius 3 cm ⇒ 113.10 cm²
- Radius 5 cm ⇒ 314.16 cm²
- Radius 1.5 cm ⇒ 28.27 cm²
FAQ
Why 4πr²?
It's the standard formula for the surface area of a sphere.
Can radius be in meters?
Yes, any unit works; results will be in the squared unit.
Does this calculate volume?
No, it only gives surface area.
Additional Information
- Result unit: cm²