Предмет: Геометрия, автор: Аноним

помогите, пожалуйста! срочно! даю баллы!

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Автор ответа: Mary72837

Ответ:

Объяснение: формула трапеции (AB+CD)/2*BH.

BH (высота)=0,5AB=3

S(трапеции)=10*3=30

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