Предмет: Алгебра, автор: polzovatelgygla69

помогите пожалуйста это срочно дам 50 б​

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Автор ответа: ludmilaksenija2005
1

Объяснение:

p=7700кг/м³

l=80 см=0,8 м

R=2,5 см=2,5•10`²м

π=3,14

найти : m

решение:

m=pπR²l

m=7700кг/м³•3,14•(2,5•10`²м)²•0,8 м=

=7700•3,14•6,25•10`⁴•0,8=120890•10`⁴м=

=12,089 м

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