(
. pertica
) - , '. 1 . 10
(3 ), , 볿 䳿 10 25 . 1 . = 16,5 = 1/40
= 25,29
2
= 0,00625
. - , 25
2
. ' 1 . = 2160 = 24,75 = 0,700842
3
.
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2001-13