Предмет: Геометрия, автор: dake007

Найдите площадь трапеции ABCD с параллельными сторонами AB=18 см CD=12 см и высота 9 см

Ответы

Автор ответа: Ololoshka2035

площадь равна произведению полусуммы оснований на высоту.

a+b

S=______ х h

18+12

______ x 9 = 135

Ответ: Площадь трапеции 135

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