( 1219941 )
↓
2R- =3,14. ., = 40, : =2*3,14*20=120, =20- 2 =18
120+1 ( ) 19
nelyasha
"* ": 1 - 2 - ... 12 - .- 13 - . "" 14 - !
, . , , .
, . - . , - . , .
( VIP-)
!
. , , . , , .
- - !
:
3 , 2008 - 19:23 —
" "
.