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(.bii 4) 831,02 - (215,45 + 78,18)
(.b;j2) 25,19 X 45,3
(~ 2) 4940 : 15,2
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(.bii4) 4 ( 2 -6 ) =
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(.bii2) 2,5km3 dam = . .
hm
(.bii 2) 3,2 t 2;39q = .kg
(,b:ij2) 12 dam227,5 a = ca
(.b;j 2) 7,8 dm3= i= dI
Lt...)J!ô~.i ~ ~tl.w, ~ .4% ~ ~.~~~.J.J ~~'A~~ C~ t~ .5
1 (Jaij 4) .~..)~~ ~, , JI ~ ~ ~i .f'À..)J2400
(J:ii.j3) .Jll1~ ~ ~jt ~ 3,20 m ~..P-~~ ~I ~ ~~ ~ ~Î .6
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B= 40° ; AC = 3 cm ; AB = 4 cm .
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215,45
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(02) (02) 10076.. 0760
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7 5 42 10 32 8 3 8 24
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3
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2,5 km 3 dam .' 25,3 hm(~2) ~~I i~.jll ~I .4
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2) 3~2 t 2,39 q ~ 3439 kg
(~2) 12 dam2 27,5 a = 3950 ca
(~2) 7,.8dm3 = 7,8 i = 78 dl
.' . . . (04) :~.J~ J~I ~ ~ .5
E . . 100
4. ...
.'.. . . 1. . 60 400
. 2 000 1 . . .
( 2400 X 100 ) : 4 = 240000 : 4 = 60 000
(3,20 X 3~20)X 3,20 = 32,768 : m3~~~I~.6
32,768 m3 '= 32 768 i :J4U4~~I ~
B Â = 90° ~.J.J'1''1(.)il W!
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. (0 1/2 ) 4X 2=8 :cm2~ J~1 "1 ~Lw.o.7 .
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(0- 2 ) (2 ~ 2)
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X 3,14 ..= 12;56
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:cm2 ~ ~.;i11 ~Lw.o
(0 1) , 12, 56 : 2 = 6,28 ..' :cm2 ~ ~.;iJ1 ~L..- ~.
(02) '8-6,28.=1;72; '., 'f .~. :cm1 ~~I ~~I ~L-.. ùMl:! ~ '3