Предмет: Геометрия, автор: dasha460

помогите пожалуйста!!!

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Автор ответа: ssoxo

Площадь сектора равна одной трети от площади круга. 120/360=1/3
Sкр=πR²
Sсек=Sкр/3=π·144/3=48π см²

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