-

24.4.2012

0.

:23 x 27m

: + + 3

: h = 3mh = 3m

0.

0.

1.

1 xx = 27.0m= n L2 yy = 23.0m= n L

xL 5.0m6.0my5.0m 6.0m

L

:L 5 40m 55 40m 27 0m

x

y

L = 5.40m 55.40m= 27.0m

L = 5.75m 45.75m= 23.0m

3 3 !!!

1.

2.

.

, , 5cm 2 .

a i = 35cm 40cmamin = 35cm 40cm

:

+ + 3

111 = 40cm, b/d = 40/40cm

45 b/d 45/452 = 45cm, b/d = 45/45cm

3 = 50cm, b/d = 50/50cm

3. xLL maxL= yL

L Ld

> d 12 20d d

> d db2 3

: :575cm 575cm

d 28.75cm 47.92cm12 20

> = : d 50cm

d d 50cm 50cmb 16 7cm 25cm

=

= = b 16.7cm 25cm2 3 2 3 : b 40cm *

= = =

*)

4.

7.

:

1. ; ;

2. ;

3 3. .

:

.

L 5 40mxy

L 5.40m0.5 0.94 2

L 5.75m

2

< = = =p 35

14cm.

6.

.

8.

: .

: .

6.

6.

6.

()

7.

.

:

H HD

6 8 >

(H )

6 8

:

(1 3) 3 0 (1 3) 3 0 (1 3) 3.0m (1 3) 3.0mD6 8

+ + > D 1.5m 2.0m>

7.

7.