- #1

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## Homework Statement

The volume is 512cm^3. Known as V=abc; a = 2b, b = 2c. Find a, b, c

## Homework Equations

V = 512cm^3.

a = 2b

b = 2c

## The Attempt at a Solution

V=2b * 2c * c

V=2b * 2c^2

512cm^3=2b * 2c^2

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- Thread starter besfort
- Start date

- #1

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The volume is 512cm^3. Known as V=abc; a = 2b, b = 2c. Find a, b, c

V = 512cm^3.

a = 2b

b = 2c

V=2b * 2c * c

V=2b * 2c^2

512cm^3=2b * 2c^2

- #2

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512cm^3=2b * 2c^2

You know the relation between b and c, so you can write this expression in terms of 1 variable.

- #3

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So this would be written as 2 * 2c * 2c^2 which would result to 8c^3, right?

- #4

- 265

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So this would be written as 2 * 2c * 2c^2 which would result to 8c^3, right?

Yes :-)

- #5

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I came to the result;

a = 16cm,

b = 8cm,

c = 4cm

V = 16cm * 8cm * 4cm

V = 512 cm^3

Which is correct. Thank you for the help!

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