Odpowiedź:
z tw.Pit
[tex] {3}^{2} + {x}^{2} = {15}^{2} [/tex]
[tex] {x}^{2} = 225 - 9[/tex]
[tex]x = \sqrt{216} = 6 \sqrt{6} [/tex]
[tex]2x = 12 \sqrt{6} (cm)[/tex]
[tex]p = \frac{e \times f}{2} [/tex]
[tex]p = \frac{6 \times 12 \sqrt{6} }{2} = \frac{72 \sqrt{6} }{2} = 36 \sqrt{6} ( {cm}^{2} )[/tex]
