# Cross-section 17871

The road embankment has a cross-section of an isosceles trapezoid with bases 16 m and 10 m long and with arms 5 m long. How many cubic meters of soil is in the 400 m long dam?

### Correct answer:

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Calculation of an isosceles triangle.

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Calculation of an isosceles 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
**planimetrics**- Pythagorean theorem
- right triangle
- area of a shape
- triangle
- trapezoid

#### Units of physical quantities:

#### Grade of the word problem:

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