30.10.23

45.

EG = (AB + FH)/2

FH = ((AB +FH) : 2 + 5)/2

2 x FH = ((AB + FH) : 2 + 5)/2 x 2

2FH = 2 + FH/2 + 5

2FH = 2 + FH/2 + 10/2

2FH = 12 + FH/2

2 x 2FH = 12 + FH/2 x 2

4FH = 12 + FH

-FH + 4FH = 12

3FH = 12

FH = 4սմ

EG = (AB + FH)/2 = (2 + 4)/2 = 6/2 = 3սմ

46.CA = (DN + BM) : 2 = (10 + 22) : 2 = 32 : 2 = 16սմ

47.