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#1 2010-06-20 07:00:35

lakeheadca
Member
Registered: 2010-01-31
Posts: 37

Find Sphere Volume

A sphere is inside a cube. What is volume of sphere?
I don't remember exactly what was the question, perhaps they gave the volume of cube i.e: 100³.
thank you

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#2 2010-06-20 07:21:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,482

Re: Find Sphere Volume

Hi;

spherecube_42278_lg.gif

Like that?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#3 2010-06-20 22:17:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,482

Re: Find Sphere Volume

Hi;

If you say that the Volume ot the cube is equal to 100^3 then the sides of the cube are 100. The diameter of the sphere is equal to 100. The volume of the sphere is

V = ( 4 / 3 ) π r^3 = ( 4 / 3 ) π 50^3 = ( 4 / 3 ) *125000 π


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#4 2010-06-21 17:16:23

lakeheadca
Member
Registered: 2010-01-31
Posts: 37

Re: Find Sphere Volume

!!!Where did you learn this stuff!!!
you guys know almost everything in math.
  ********** thank you bobby***********
I have two questions which I asked couple of math teachers but couldn't get the answers (even reply:). I know you can solve those problems. I will write and try to ask you later, as soon as my computer work properly. I think they  involve Numerical Approximation and differentiation.

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#5 2010-06-21 18:35:53

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,482

Re: Find Sphere Volume

Hi lakeheadca;

!!!Where did you learn this stuff!!!
you guys know almost everything in math.

I do look pretty good with wikipedia behind me.

I think they  involve Numerical Approximation and differentiation.

At last, my field! Now you will see me shine! A former boss of mine and one of the smartest people I ever knew said this about my work:

Watching you solve a problem hurts my eyes.

That's not so bad, that could mean anything.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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