Tetrahedral pyramid
Calculate the regular tetrahedral pyramid's volume and surface if the area of the base is 20 cm2, and the deviation angle of the side edges from the plane of the base is 60 degrees.
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
- square
- diagonal
- quadrilateral
- goniometry and trigonometry
- tangent
Units of physical quantities:
Grade of the word problem:
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