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определите массу гранитного куба с ребром 80 см
пожалуйста подробнее, у меня завтра огэ
Ответы 1
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Ответ:
1331.2 кг
Объяснение:
m=p×V
p - плотность. значение таблично
р(гранита)=2600 кг/м^3
V=a×a×a
80 см = 0.8 м
V=0.8^3=0.512 (м^3)
m=2600×0.512=1331.2 (кг)
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Автор:
joshua - 5 лет назад
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0
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Had been waiting
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Waited
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was taking
had been taking
had taken
took
3)I handed Betsy today’s newspaper, but she didn’t want it. She ____ it during her lunch.
Read
Had been reading
Had read
Was reading
4)When Mary came back, she looked very red from the sun. She ____ in the sun too long.
Had been lying
Was lying
Had lain
lay
5)Be careful with paint. It ____ a certain amount of lead.
Contains
Is containing
Has contained
Contained
6)I have just applied for a job in the local hospital, now I ____ for an answer from them.
Wait
Have been waiting
Have waited
Am waiting
7)How long ____ a course of lectures on Medieval History?
Does Professor Donaldson deliver
Is Professor Donaldson delivering
Has Professor Donaldson delivering
Has Professor Donaldson delivered
8)She is not sure if she ____ his telephone number in the telephone directory.
Will find
Will have found
Finds
Will be finding
9)According to the weather forecast it ____ tomorrow all day long.
Will be raining
Will rain
Will have rained
Will have been raining
10)I ____ to London tomorrow; I will phone you when I arrive.
Will come
Am coming
Will be coming
Will have come
11) I was sorry ____ as I couldn’t finish my conversation with Frieda.
To be disturbed
To have been disturbed
To disturb
To have disturbed
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To do
To be done
To be doing
To have been doing
13)You were wondering if you could have a cutting from my jade plant? ____ all means, take a few. You are welcome to take at least three or four.
At
By
For
To
14)The child hurt her leg badly and started to complain ____ having severe pains in it.
Of
About
At
For
15)Lorna intended to help him ____ lending him some money.
On
While
Through
Of
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