# Triangular pyramid

A regular tetrahedron is a triangular pyramid whose base and walls are identical equilateral triangles. Calculate the height of this body if the edge length is a = 8 cm

## Correct answer:

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Calculation of an equilateral triangle.

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Calculation of an equilateral triangle.

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### You need to know the following knowledge to solve this word math problem:

**algebra**- expression of a variable from the formula
**arithmetic**- square root
- square (second power, quadratic)
**planimetrics**- Pythagorean theorem
- right triangle
- polygon
- triangle

### Units of physical quantities:

### Grade of the word problem:

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