oblicz pola i obwody zacieniowanych figur. dam naj
Pole koła Pd = pole dużego kola Pm = pole małego kola Pc = pole zacieniowanego pierścienie \pi x^{2} Pd= \pi 8^{2} Pd= \pi 64 Pm= \pi 3^{2} Pm= \pi 9 Pc= 64 - 9 =55 Obw= 2 \pi r 0bw= 2*8 \pi obw= 16 \pi b) Pc= 2 \pi r^2 + 2 \pi rH Pc= \pi (2\sqrt{2})^2 + 4*2 \sqrt{2} \pi = 4,84 /pi + 8 \sqrt{2} /pi
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Pole koła Pd = pole dużego kola Pm = pole małego kola Pc = pole zacieniowanego pierścienie \pi x^{2} Pd= \pi 8^{2} Pd= \pi 64 Pm= \pi 3^{2} Pm= \pi 9 Pc= 64 - 9 =55 Obw= 2 \pi r 0bw= 2*8 \pi obw= 16 \pi b) Pc= 2 \pi r^2 + 2 \pi rH Pc= \pi (2\sqrt{2})^2 + 4*2 \sqrt{2} \pi = 4,84 /pi + 8 \sqrt{2} /pi