Предмет: Математика, автор: Bbookadjb

Помогите решить букву а)
(Подробно)

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Автор ответа: SpringScorpion
1

Ответ:

Радиус цилиндра — \frac{d}{2} = 10/2 = 5 см.

Длина окружности — π*d ≈ 3,14*10 ≈ 31,4 см.

Площадь основания цилиндра — π*r² ≈ 3,14*5² = 3,14*25 = 78,5 см.

Пошаговое объяснение:

Надеюсь, все правильно и понятно

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