19
(
, ),
( ).
( )
4
.
– 11 "
(279,4 )
,
13,76 " (349,6 ),
0,39 " (10 )
.
–
.
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.
.
,
.
, -
.
,
.
a
a
a
a = 0,157 " (4 )
= 0,39 " (10 )
0,157 " (4 )
