Предмет: Математика, автор: yeshimova0906

нарисован прямоугольник АБСД AF =3 см,FB=AE=ED=2 см найдите площадь закрашеной фигуры пожалуйста помогите

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Ответы

Автор ответа: iosiffinikov

2

Ответ:

В) 6 см кв

Пошаговое объяснение:

Пусть О точка вершина прямоугольника АЕFO.

Тогда площадь треугольника АЕО равна 3*2/2=3 см кв

(произведение ЕО на АЕ , деленное на 2)

Площадь треугольника ЕОС равна 2*3/2=3 см кв

(ЕО на ЕD, деленное на 2)

Искомая площадь 3+3=6 см кв

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