# Flowerbed

Flowerbed has the shape of a truncated pyramid. The bottom edge of the base a = 10 m, and the upper base b = 9 m. The deviation angle between the edge and the base is alpha = 45°. What volume is needed to make this flowerbed? How many plants can be planted if one m

^{2}= 100 plants?## Correct answer:

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

**arithmetic**- square root
- rounding
**solid geometry**- pyramid
- frustum
**planimetrics**- right triangle
- triangle
- square
- diagonal
**numbers**- fractions
**goniometry and trigonometry**- tangent

#### Units of physical quantities:

#### Grade of the word problem:

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