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nikdorinn [45]
3 years ago
12

Внешний диаметр полого шара равен 16 см. Толщина стенок 2 см Найти

Mathematics
2 answers:
DIA [1.3K]3 years ago
8 0

Answer:

Внешний радиус

Тогда внутренний радиус

Объем материала равен разности объемов внешнего и внутреннего шаров, то есть

Sliva [168]3 years ago
5 0

Answer:

1239.25 cm³

Step-by-step explanation:

Outer diameter 16 cm

⇒ R= 8 cm

Inner radius  

⇒ r= R- 2= 6 cm

The volume of the wall of 2 cm thickness:

⇒ 4/3πR³- 4/3πr³= 4/3*3.14*(8³-6³)= 1239.25 cm³

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