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OpenStudy (anonymous):
The volumes of two spheres are 729 in3 and 27 in3. What is the ratio of their radii, rounded to the nearest whole number @Directrix
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Directrix (directrix):
If two solids are similar, the cube of the scale factor of the two solids is equal to the ratio of the volumes.
Directrix (directrix):
729/27 = (ratio of radii)^3 What is the cube root of 729/27?
OpenStudy (anonymous):
um i got 0.19 i know i probably did it wrong
Directrix (directrix):
(729/27) = (9*9*9)/3*3*3) Cube root is 9/3 = 3/1
Directrix (directrix):
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OpenStudy (anonymous):
its 3:1 right?
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