Предмет: Геометрия, автор: snezannacistakova

Дана трапеция ERTQ с основаниями 13 см и 21 см. Боковая сторона ER = 12 ER=12 см, а REQ = 30 ∠REQ=30° . Чему равна площадь ERTQ ?

vkhasanov: дай 3мин я решу
snezannacistakova: нужен просто ответ
vkhasanov: 102см2
snezannacistakova: спасибо
vkhasanov: не за что)

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Автор ответа: vkhasanov
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