Предмет: Геометрия, автор: Artemohotnik

Помогите срочно срочно!!!!!

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Автор ответа: tito33

1

площадь трапеции равна произведению полусуммы оснований на высоту S=(8+4)/2*3=6*3=18 cм

Автор ответа: fyyf0303anna

1

Ответ:

S=1/2h(a+b)

S=1/2×3(8+4)=18

Объяснение:

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