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Topic: Help with math part of a problem  (Read 5009 times)

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Offline lokobreed

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Help with math part of a problem
« on: February 12, 2011, 05:05:13 PM »
The density of silver is 10.5 g/cm^3.
A) What is the volume in cm ^3 of an ingot of silver with mas of 0.443kg. - The volume would be 42 cm^3
B) If this sample is a cube how long is each edge in cm?
C) How long is the edge of this cube in inches?

I need help finding B and C
For B how would I find the length of each side if the final answer is cubed??
For C would I take the answer I get in B and convert it to inches and still cube it??
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Offline sjb

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Re: Help with math part of a problem
« Reply #1 on: February 12, 2011, 09:30:19 PM »
Quote from: lokobreed on February 12, 2011, 05:05:13 PM
The density of silver is 10.5 g/cm^3.
A) What is the volume in cm ^3 of an ingot of silver with mas of 0.443kg. - The volume would be 42 cm^3
B) If this sample is a cube how long is each edge in cm?
C) How long is the edge of this cube in inches?

I need help finding B and C
For B how would I find the length of each side if the final answer is cubed??
For C would I take the answer I get in B and convert it to inches and still cube it??

What would the volume be of a cube with side 2 cm?
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Offline lokobreed

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Re: Help with math part of a problem
« Reply #2 on: February 12, 2011, 09:32:04 PM »
It would be one side x one side correct?
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Offline sjb

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Re: Help with math part of a problem
« Reply #3 on: February 12, 2011, 09:45:35 PM »
Quote from: lokobreed on February 12, 2011, 09:32:04 PM
It would be one side x one side correct?

Does length x length have the dimensions of volume?
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Offline lokobreed

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Re: Help with math part of a problem
« Reply #4 on: February 12, 2011, 10:37:14 PM »
It would be 6 cm... but if i took the colume 42 cm ^3 and divide it by 3 (for length x width x depth) it would still not come out to the right answer for the length in cm of each side.
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Offline opti384

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Re: Help with math part of a problem
« Reply #5 on: February 12, 2011, 10:57:18 PM »
Quote
but if i took the colume 42 cm ^3 and divide it by 3

Why divide by 3?

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Offline lokobreed

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Re: Help with math part of a problem
« Reply #6 on: February 12, 2011, 11:05:07 PM »
well if the volume is side x side x side and i am looking for the length of one edge cm ... thats the only way that comes to my mind... The book has the answer for B and C but I do not know how to compute it
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Offline opti384

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Re: Help with math part of a problem
« Reply #7 on: February 12, 2011, 11:09:05 PM »
Okay let's say an area of a square is 25. What will be the length of the side?
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Offline lokobreed

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Re: Help with math part of a problem
« Reply #8 on: February 12, 2011, 11:42:45 PM »
opti - I know how to do it I just can remember how to caluclate it

I know it would be the cube of 25 but could you help me possibly break this down??
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Offline lokobreed

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Re: Help with math part of a problem
« Reply #9 on: February 12, 2011, 11:46:31 PM »
I get it - sorry !! Thank you OPTI MOLE SNACKS given
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