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Mathematics 13 Online
OpenStudy (precal):

A cube has edges that are 6 centimeters long. How many times greater is the volume of a cube with 9 centimeter sides?

OpenStudy (solomonzelman):

scale factor of 3/2

OpenStudy (precal):

actually 1.5 to the 3rd power therefore 3.375 times

OpenStudy (solomonzelman):

lets say cube 1 is with each side of c and cube cube 2 with each side (c × v) Area of Cube 1: \(\LARGE\color{blue}{ \bf c^{3} }\) Area of Cube 2: \(\LARGE\color{blue}{ \bf (cv)^{3}=c^{3} \times v^{3} }\) So the volume of the second cube is v^3 times greater.

OpenStudy (solomonzelman):

in your case the "c" is 6 and v is 3/2

OpenStudy (precal):

yes, that is correct. Question is how many times greater is the volume so that would be 3.375 times greater

OpenStudy (solomonzelman):

yes, you are correct.

OpenStudy (precal):

Thanks

OpenStudy (solomonzelman):

Anytime !

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