Предмет: Математика, автор: zuhrasulieva13

для участие в маскараде необходимо изготовить колпак высотой 40 см . какой длины должна быть боковая сторона колпака и его радиус , если размер головы 36см? решите

Ответы

Автор ответа: ZlataSergeeva2000

Ответ:

R = 57 мм; L = 404 мм

Пошаговое объяснение:

H = 40 см

Окружность головы C =2πR = 36 см

R = C : (2 · π) = 36 : (2 · 3.14) ≈ 5.7 (см) = 57 мм

Длина боковой стороны находится из теоремы Пифагора

L² = Н² + R² = 40² + 5.7² ≈ 1633

L ≈ 40.4 (см) = 404 мм

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