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1,5 , 7,5 . 1,5 , , 6 () 6- ; 1,5 , , ; , 3-4. , , . , 12, 1,5 , , .

= 40
= 10 = 12,29 .
= 1/16 = 0,768 .
= 1/20 = 5 = 0,61 .
= 40 = 16,38 .
= 32 = 96 = 409,51241 .


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