:
- 1620
D = 66 d = 60hll = 300 .
= 6,3 .
, 40X, = 720 ( 72 /2).
.
- - - .
.
:
- ;
- ( , , );
- .
( .[_2]).
.
:
I. .
.
156 (. 6, . 149);
45.
.
1620 25 . = 25 . = 16 . , x H = 16 x 25; 150 .
:
( III),
= 2 ,
R = 4 (. 29, . 187);
= 15;
= 5;
= 12;
= 0 (. 30, . 188);
=60;
= 15 (. 31, . 190);
= 1 (. 32, . 190 . 4, . 3, . 420).
II. .
I. . , . . i == 1.
(1)
2. ( . 4. . 420). = 6,3 ( ), = 1 = 0,45... 0,60 /.
, 1,25 ( , . 1):
= (0,45 0,60) 1,25 = 0,56... 0,75 /.
= 0,65 /.
1620 (. . 1 ): = 0,6 /.
3. = 60 (. 415).
4. (/) , , (. 415):
(2)
. 8 (. 422) .
, 156 = 0,6 /
= 350; =0,15; =0,35; = 0,2.
|
|
, , .
:
, (. 9, . 424):
(3)
=720 ; = 1,04;
, (. 14, . 426), == 0,8, ;
, (. 15, . 426),
= 1, 156;
, (. 16, .427) = 0,9, = 60;
, (. 17, .427)
= 1, .
1,04 0,8 1 0,9 1 =0,749. (4)
,
, :
= =564 -1. (5)
. 1620 : 500 -1
= = 103,7 /. (6)
= 1,73 /.
7. ()
(. 427) (7)
. 20 (. 429) ,' , = 750 : 300, = 1; , - 0,15
.
, , . :
, (. 21, . 430);
(8)
. 22, . 430. 0,75.
720 .
, (. 24, . 431).
0,94;
, (. 24, . 431),
= 1, ( );
, (. 24, . 431), = 1,
, 103,7 / = = 1,73 /.
(9)
t
.
8. , :
(. 431),
, /;
= 4,81 .
(10)
, /;
= 4,81 .
9. , .
(11)
()
(12):
1620
100,75 = 7,5 .
, 4,81 < 7,5, .. .
|
|
(13)
- (-1),
, , , :
(14)
, . 5 . , ( 1 ) 25 % .