Два кути опуклого п'ятикутника прямі,а решта три рівні.знайдіть їх градусну міру.

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okru24057p00ymy

03.03.2023

Сумма углов выпуклого пятиугольника равна 540 градусов. Если два из них прямые, то сумма оставшихся трёх углов равна 360 градусов. 360/3=120 градусов

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Ответ:

JonHenryEdem1

03.03.2023

You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England and you really start liking this county. Write this news to your English friend: a) The more I read about England, the bigger I like it. 6) The much I read about England, the bigger I like B) The more I read about England, the more I like it. r) The many I read about England, the many I like it. You read a lot about England an

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Ответ:

akon1708

03.03.2023

Осевое сечение - это сечение геометрической фигуры, плоскость которой проходит через ось данной фигуры. Сечение конуса, которое проходит через его ось - равнобедренный треугольник, потому как образующие образуют боковые стороны этого треугольника. Имеем равнобедренный треугольник ABC: AB = BC = 2*sqrt(3). CO - высота конуса, которая является и медианой, и биссектрисой в равнобедренном треугольнике, опущенная на основу. Следовательно, угол BCO = углу ACO = 60 градусов. Из прямоугольного треугольника BOC: угол CBO = 90 - 60 = 30 градусов. Катет, который лежит против угла 30 градусов, равен половине гипотенузы: OB = CB/2, OB = sqrt(3) = R. Найдем высоту конуса. Из теоремы Пифагора: CO^2 = CB^2 - OB^2, CO^2 = 12 - 3 = 9, CO = 3 см = H. Площадь основания конуса - это площадь окружности: S = pi*R^2, S = 3*pi см^2.
Объем конуса равен (S*H)/3, V = (3*3pi)/3 = 3pi см^3.

Длина образующей конуса равна 2 sqrt ( корень квадратный ) 3 , а угол при вершине осевого сечения ко