Предмет: Геометрия, автор: lol202020

основания трапеции равны 9 и 15, а боковая ее сторона равна 8. Найдите площадь трапеции если угол при данной боковой стороне равен 30 градусов

Ответы

Автор ответа: missiag2004

Объяснение:

ВН=4 (т.к. на против угла в 30 гр) (ВН-высота)

Площадь = 9+15\2 * 4=48

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