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Срочно!!!!! Найдите массу медной пластинки диаметр которой равен 30 см, а площадь 2,5 см. (Плотность меди 8,9 ²/см³
Ели можно с рисунком
Ответы 1
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Ответ:
Объяснение:
Может быть не площадь а толщина ...
Тогда масса = объем на плотность 706,5 * 8,9 = 6387,85 грамм
объем = π*R² = π* D²/4 = 3,14 * 225 = 706,5 см³
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Автор:
kelvinpz5o - 5 лет назад
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0
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