Предмет: Математика, автор: farrhkodirzonov

704 Найдите площадь поверхности и объем куба с ребром 9 дм​

milashekKsu: Я не уверена но 9*9*9*9*9*9*9*9*9*9*9*9=282 429 536 481
milashekKsu: Или 9*12=108

Ответы

Автор ответа: Monet04ka
14

Ответ:

729 дм³  ; 486 дм²

Пошаговое объяснение:

Объём фигуры -- высота на ширину на длину. так как данная фигура -- куб, то у него все рёбра равны, следовательно его объём равен:

9*9*9 = 729 дм³

Площадь поверхности равна сумме площадей всех граней. у куба 6 граней. площадь каждой грани -- длина на ширину:  

9*9 = 81 дм²

Площадь всех граней: 81*6 = 486 дм²

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