Hej!
[tex] d = \sqrt{ {a}^{2} + {b}^{2} + {c}^{2} } \\ \\ d = \sqrt{ {2}^{2} + {3}^{2} + {5}^{2} } \\ \\ d = \sqrt{4 + 9 + 25} \\ \\ d = \sqrt{38} [/tex]
Pozdrawiam! - Julka
