Предмет: Геометрия, автор: jllms

длина дуги в 240 градусов равна 24 см найдите площадь соответствующего сектора 240 градусов

Ответы

Автор ответа: Dedagenn

5

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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