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OpenStudy (anonymous):
Consider a sphere of radius r. If the radius is multiplied by , how is the volume of the resulting sphere affected?
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Directrix (directrix):
If the radius is multiplied by x, then the volume is multiplied by x^3
Directrix (directrix):
Did you leave something out of the problem? If the radius is multiplied by , --> multiplied by what?
OpenStudy (anonymous):
sorry, if the radius is multiplied by 2
Directrix (directrix):
Then the volume is multiplied by 8. All spheres are similar. The cube of the scale factor is the ratio of the volumes (1/2) ^3 = V1/V2 1/8 = V1/V2
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