1. ,
I: 3.
S: .
: , . , , , .. ?
-:
+:
2.
I: 52.
S: 60 CD. F = 2 (. .), (. .). = 4 , = . M (R D) R D CD . . | M (R D)| = (ּ)
+: 8
3.
I: 80.
S: AB CD. F 45 (. .). CD = CB, CE = CB. ( .)
R . :
-:
-:
-: 45
+: DA
-: EA
4.
I: 120.
S: CD; A, C D . F = 2ּ (). . R CD. .
R = ()
+: 6
5.
I: 5.11.
S: RC C, P = 450ּ (), = 1 (), = 3 (). ( .) RC = ().
+: 750
6. .
. vx . x t = 7 . .
x = ().
+: 0
7. .
b (AB = BC = AC = b). v (| 1| = | 2| = | 3|); , , . ?
:
-: b/ (2 v); +: 2 b/ (3 v); -: b/ 2 v; -: 4 b/ (3 v); -: 3 b/ (2 v)
8. . .
.
I: 273.
S: 600 . 300 , 120 , . ( /.) , 15 /?
|
|
n 1 ( /.) , 15 /?
.
-: 972
+: 1194
-: 1305
-: 1410