geometry calculator

Regular Icosahedron Surface Area Calculator

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

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 = 5 x sqrt(3) x edge^2

With 20 equilateral triangles on the surface, the icosahedron area collapses into a short exact formula.

Example

Edge Length 4 gives Surface Area 138. 56.

Check

Mixing units across the inputs before reading the result.
Entering a value outside the formula conditions and treating the result as valid.

Next Step

Next Calc

Regular Dodecahedron Surface Area Calculator

Next: regular dodecahedron surface area.

Next Calc

Regular Hexagonal Prism Surface Area Calculator

Next: regular hexagonal prism surface area.

Next Calc

Regular Octahedron Surface Area Calculator

Next: regular octahedron surface area.

Important Use Notice

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