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Obvod a obsah kruhu
Vypočítej obvod a obsah kruhu ohraničeného kružnicí opsanou trojúhelníku:
\( BLE \), kde \( \left|BE\right|=11\ cm,\:\left|\measuredangle BEL\right|=45\degree,\:\left|\measuredangle EBL\right|=55\degree \)
\( S ≐ \frac{\pi\ ·\ 12,17^{2}}{4} \)
\( S≐ 110\ cm^{2} \)
\( S ≐ \frac{\pi\ ·\ 11,17^{2}}{5} \)
\( S≐ 80\ cm^{2} \)
\( S ≐ \frac{\pi\ ·\ 10,17^{2}}{4} \)
\( S≐ 90\ cm^{2} \)
\( S ≐ \frac{\pi\ ·\ 11,17^{2}}{4} \)
\( S≐ 98\ cm^{2} \)