Предмет: Геометрия, автор: ala917227

Потрібно пофарбувати бічну поверхню бака циліндричної форми з діаметром основи 1,5 м та висотою 3 м. Скільки потрібно фарби, якщо на один квадратний метр витрачається 200 г фарби?

Ответы

Автор ответа: zmeura1204

Ответ:

2826 гр

Объяснение:

Sбіч=π*d*h=1,5*3π=4,5π=4,5*3,14=

=14,13 м²

1м²=200гр

14,13*200=2826 гр або 2кг 826 гр.

zmeura1204: Перерахувала.

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