geometry calculator

Regular Dodecahedron Surface Area Calculator

This tool works well for focused work where you only want one formula and one answer path around regular dodecahedron surface area.

Important Use Notice

Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.

Estimate

Enter job values, review the estimate, then use the decision hints before ordering or quoting.

Estimate Results

Enter values to see the result.

Formula

surface area = 3 x sqrt(25 + 10sqrt(5)) x edge^2

The twelve regular pentagon faces of a dodecahedron reduce to this exact surface-area expression.

Example

Edge Length 4 gives Surface Area 330. 33.

Check

Forgetting that some inputs must be whole-number counts rather than decimals.
Mixing units across the inputs before reading the result.

Next Step

Next Calc

Regular Hexagonal Prism Surface Area Calculator

Next: regular hexagonal prism surface area.

Next Calc

Regular Icosahedron Surface Area Calculator

This page is tuned for clean geometry checks during drafting or homework around regular icosahedron surface area.

Next Calc

Regular Octahedron Surface Area Calculator

Next: regular octahedron surface area.