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mikailah0988
03.09.2019 •
Mathematics
If the surface area of a cube is increased by a factor of 2 (so that the new surface area is twice the size of the original surface area), by what factor does the volume of the cube change?
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Ответ:
2.828
Step-by-step explanation:
Given
Surface area of a cube is increased by a factor of 2
Let the original surface area be A
such that new surface area is 2A
for volume we need to know new radius
where r'=new radius
r=original radius
New volume(V')![=(a')^3=(\sqrt{2}a)^3](/tpl/images/0222/1278/4c8c2.png)
Original volume![=a^3](/tpl/images/0222/1278/711d4.png)
Ответ:
I think that the altimeter would read as '0'. Positive readings would show that she was above sea level and negative readings we would show that she was below sea level. I hope that this helps