[tex]R=7\\r=\sqrt5\\\\|S_1S_2|=2\sqrt5 = 4.45\\\\|R-r|=|7-\sqrt5|=4.76\\|R+r|=9.24\\\\4.45 < 4.76\\|S_1S_2| < |R-r| - \text{Rozlaczne wewnetrznie}\\\\Odp. C[/tex]
