Предмет: Математика, автор: kpv26598p12

ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!
Усі бічні грані правильної чотирикутної піраміди нахилені до площини її основи під кутом 60°. Площа повної поверхні піраміди дорівнює 54/6 см². Обчисліть площу (у см³) перерізу цієї піраміди площиною, що проходить через висоту піраміди й діагональ її основи.

Ответы

Автор ответа: kirillbasysti05

Відповідь:

Покрокове пояснення:

x+2-f+в=2у

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