Длина ребра куба равна 4см. чему равна площадь одной грани куба? найди значение суммы площадей всех граней куба.
DeathStroke11
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18.05.2019 07:50
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1
Находим площадь грани:
4*4=16(см2)
Теперь сумма всех граней:
16*6=96(см2)