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  •   1

.


ר:

=  - /(   )

, - (3,14)

: - 3 3/4, 144

144/(3,75 3,14)= 12,22 (12 ) 
 


 
- 56 72 84 96 108 120 132 144 156 168 176 180 200 220 240 260
                                                                  
3 1/2   6 7 8 9 10 11 12 13 14 15 16 17      
3 3/4   7 8 9 10 11 12 13 14 15 16 17 18 20 22 24
4 1/8 4 5 6 7 8 9 10 11 12 13 14 14 15 17 19 20