Dushka_li
.
. , , , . - . .
- - . , , . :
1. , , .., .
2. , .
, . , , , .
20. 25 30. , . , . , 22,5.
20 : 22.5 = 0,88 - . : 100%-88%=12%. .
. 46 , 164-170, 1 . . - , " ". , .
( ) ( ).
,
, .
1. =*0,38=17*0,38=6,5. . 0,38 - . .
2. - =0,380,38 =170,380,38=2,46
3. - = 44,1-41,1= 3
4. + /2 = 6,5+2,46/2 = 7,73
5. = 0,38 = 41,10,38=15,6 . +2. = +2 = 15,6+2*2,46=20,52=20,5
6. , , . *0,88=12,5*0,88=11; *0,88=17*0,88=14,96=15; *0,88=20*0,88=17,6; *0,88=9*0,88=7,92=7,9
, , "" .
7. , . /2 = 7,9/2=3,95=4
8. . , , . , .
8.1 = ( + + ) 2 = (15+17,6+7,9)2=81
: =81 ( ), =72 =96 ( ).
8.2 : S= (-)/2=(81-72)/2=4,5
8.3 , , .
= ( : ( + + )) * S = (4,3 : (4,3+2,2+3,2)) * 4,5=2
= ( : ( + + )) * S = (2,2 : (4,3+2,2+3,2)) * 4,5=1
= ( : ( + + )) * S = (3,2 : (4,3+2,2+3,2)) * 4,5=1,5
9.
9.1 S=( - ) : 2 = (96-72)/2=12
9.2 , , .
= ( : ( + + )) * S = (1,2 : (1,2+4+6)) * 12=1,2
= ( : ( + + )) * S = (4 : (1,2+4+6)) * 12=4,3
= ( : ( + + )) * S = (6 : (1,2+4+6)) * 12=6,5
10.
"" . .
11. : ( - ) : 2 = ( ) - ( )
(96-81)/2=7,5 = (3,3+5)-0,8=7,5 - , .
" "
" "
=41,1, " "
" " =15 , " ". =7,9. - , =40.
" " 20,5 " ".
.
" " =6,5. =3. 2 . " ".
. =2,46. .
R=-, = 6,5-2,46 = 4,04>3. - . 4 . , , , - R= 4 .
. 7,9 / 2 = 3,95. .
7 , =11, .. , . 7
30-45, 55. 45 , . 30-35 . 45.
. =60,3 ( ). . 2 . : ( ) 2 2 . (16,5*0,88-2)/2= 6,3 - . (16,5*0,88+2)/2 = 8,3 - .
=2,46.
.1, . 1 ( ). 1*2=2.
.1 1. , 14,6. 46 28,1. 1, 13,6. 14,6+13,6=28,2. , - , . , . , 3, 3 ( ), 32-34, ( ). ( ). .
(=1).
.1 .2. , .3. . 2 3 . , 2.
.. -1, 1 1 () 1 (). , . 1 1 r=1-2 ( .1 .2). 1 1 r=1-3 ( .1 .3). .
, 60. , , . 0,38 = 41,10,38 = 15,6 .
. ( ). 7 .
. 1 . .
. ( ) =17,6, - ( + /2) = 46,1 - (6,5+2,46/2) = 38,37, + /2 = 7,73 - . .
. =6,5, ( + /2=7,73) . , .. 7,73.
" " " " , =19. =9,5. , . . . - .
. - r= = 27,3 ( ). - . r2= =11. 2- . . - . , , , .
. 2- - .
, 1 , . , .
. . 1/2 , .. . - , .
. 1 , : (16,5*0,88-2)/2= 6,3 - . (16,5*0,88+2)/2 = 8,3 - .
150-160. . , .
180. 166, 150-160. , .
, 160, r2, . " " ( ).
. r1. . , ( ).
r1 ., ( ).
: Makosh