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https://www.liveinternet.ru/users/4380194/post467475037/
--- 1 ---
- 280
- 100
- 150
- 60
- 3 ..
- 1 .
- 0,5 ..
--- 2 ---
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* 1 =250
1
1/3
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100
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1 . .
2
--- 3 ---
* 200
1
0,5
0,5
1 (10 .)
1
1,5
10 -15 t=180°
--- 4 ---
1
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2/3
2
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:
180.
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10 .
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: uarp.org/ru
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