Предмет: Математика, автор: kurbanovanuriat47

ПОМОГИТЕ ПОЖАЛУЙСТА С ЗАДАЧЕЙ!!! 15 БАЛЛОВ!!!Масса 1 см3 алюминия равна 2 7/9г.Найдите массу алюминиевой полоски с измерениями 1 1/4см,2 2/3см,1 4/5 м.Ответ округлите до сотых долей килограмма.​

parus77: проверь условие,там ,1 4/5 м или 1 4\5 см?
kurbanovanuriat47: 1 4/5м
parus77: хорошо

Ответы

Автор ответа: parus77
3

Ответ:

1,67 кг

Пошаговое объяснение: 1 4\5 м=1,8 м=180см

найдем объем алюминевой полоски

V=1 1\4 *2 2\3 *180=600 см³

потом найдем массу

m=V*ρ=600* 2 7\9≈1,67 кг  масса алюминевой полоски

Приложения:
kurbanovanuriat47: Спасибо
kurbanovanuriat47: А это точно правильно
kurbanovanuriat47: ???
parus77: точно.
kurbanovanuriat47: Спасибо большое за помощь и поддержку.
kurbanovanuriat47: извини если отвлекаю, но что такое m?
kurbanovanuriat47: А я поняла это масса.
parus77: это масса ,я автоматически написала формулу из физики,чтобы найти массу,надо объем умножить на плотность.Помню еще со школы,хоть и было это в 1978г.
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