Digging a pit
The pit has the shape of a regular quadrilateral truncated pyramid. The edges of the bases are 14m and 10m long. The sidewalls form an angle of 135° with a smaller base. Find how many m3 of soil were excavated when digging the pit.
Correct answer:
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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
- solid geometry
- pyramid
- frustum
- planimetrics
- Pythagorean theorem
- right triangle
- triangle
- square
Units of physical quantities:
Grade of the word problem:
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