Geometry
Hemisphere Surface Area
Total surface area of a solid hemisphere.
Formula
Formula
A = 3 π r2
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| r | radius | real number (ℝ) | — | input |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenradius r = 5
Result235.619449
Example 2
Givenradius r = 2
Result37.69911184