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11. 3
297 420 | |
210 297 | |
148 210 | |
105 148 |
12. 4
105 148 | |
148 210 | |
210 297 | |
297 420 |
13. 5
105 148 | |
148 210 | |
210 297 | |
297 420 |
14.
15.
16. 6.38 90 , - ( )
= 20; = 8; = 10; = 8 | |
= 30; = 10; = 15; = 20 | |
= 31,7; = 31,7; = 25,4; = 25,4 | |
= 25; = 25; = 25,4; = 25 |
17.
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18.
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