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Mathematics 7 Online
OpenStudy (devynd51304):

The radii of Earth and Pluto are 6,371 kilometers and 1,161 kilometers, respectively. Approximately how many spheres the size of Pluto does it take to have the same volume as Earth?

OpenStudy (arthur326):

The ratio of volumes is the cube of the ratio of the radii. What is the ratio of the radius of Earth to that of Pluto?

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