Предмет: Математика, автор: Irina2222222

Помогите, пожалуйста

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Автор ответа: nafanya2014

Проведем высоту ВК ( см . рисунок)
ВС=2 клеточки
ВК=3 клеточки
AD=4 клеточки
S(трапеции)=(a+b)·h/2=(ВС+AD)·ВК/2=(2+4)·3/2=9
Ответ 9 кв. ед

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