# Axial section

Calculate the volume and surface of a cone whose axial section is an equilateral triangle with side length a = 18cm.

### Correct answer:

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The Pythagorean theorem is the base for the right triangle calculator.

Calculation of an equilateral triangle.

See also our trigonometric triangle calculator.

The Pythagorean theorem is the base for the right triangle calculator.

Calculation of an equilateral triangle.

See also our trigonometric triangle calculator.

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