Предмет: Математика, автор: RomanButka1

помогите 6клас Срочно!!!!!!!Много балов​

Приложения:

Ответы

Автор ответа: arbuzby
0

Ответ:

78,5 cm^{2}

Пошаговое объяснение:

заштрихованная фигура это \frac{1}{4} площади круга с радиусом 10 см

найдем площадь всего круга

S=\pi r^{2} \\S=3,14*10^{2} =3,14*100=314 cm^{2}

теперь найдем  

\frac{1}{4} площади

S* \frac{1}{4}

314* \frac{1}{4} =78,5 cm^{2}

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THE OPEN WINDOW (after H. Munro)

"My aunt will come down in a few minutes, Mr Nuttel," said a girl of fifteen, showing him into the sitting-room. Mr Nuttel was a young painter who had recently had a nervous breakdown. The doctors had told him that he should go away for a holiday. They warned him, however, against crowded resorts and recommended a complete rest in a quiet country-place. So here he was, in a little village, with letters of introduction from his sister to some of the people she knew.

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"Her tragedy?" asked Mr Nuttel. "You may wonder why we keep that window wide open on an October afternoon," went on the girl, pointing to a Large French window.

349

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