Ответ:
24/2πR=240°/360°, R=24*360/(240*2π)= 18/π,
S=πR²*240/360=18²*2/(3*π)=216/π= 68.8см²
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Ответ:
24/2πR=240°/360°, R=24*360/(240*2π)= 18/π,
S=πR²*240/360=18²*2/(3*π)=216/π= 68.8см²