(. 35) , .
: , , , , 1218- .
300500 6, 9, 12 18 ( 6 ). '.
(. 36, , ) -
L =12,18 L=18,24.30.36
. 100 . 12- .
. 6 9 (. 36,) 100 .
1218- (. 36,) 80 .
(. 36,(5) , .
(. 36, ) . ., 80 .
* . .
300500. 18 24 . .
(. 37,, ) . .
(. 37,0, ) , .
(. 37,5) -
.
(. 37,, ) ( 12 ). .
( ) , . 35,.