# Pyramid four sides

A regular tetrahedral pyramid has a body height of 38 cm and a wall height of 42 cm. Calculate the surface area of the pyramid; the result is round to square centimeters.

### 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:

#### Grade of the word problem:

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