# Tetrahedral pyramid

Calculate the surface S and the volume V of a regular tetrahedral pyramid with the base side a = 5 m and a body height of 14 m.

### Correct answer:

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

**solid geometry**- pyramid
- surface area
**planimetrics**- Pythagorean theorem
- right triangle
- area of a shape
- triangle

#### Units of physical quantities:

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