Предмет: Геометрия, автор: domni4evadasha

Как найти площадь ABCD?

Приложения:

Ответы

Автор ответа: Cendelessa123

Ответ:

S ABCD = ((BC+AD)/2) ×BM

Объяснение:

Формула. Площадь трапеции равна полусумме оснований на высоту.

domni4evadasha: А как найти второе основание?

Cendelessa123: Проведём среднюю линию NH. Она равна половине большего основания. Тогда NH= AD:2=20:2=10. Площадь трапеции S=NH×BM. S=10×12=120 (см^2).

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