## anonymous one year ago 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?

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1. campbell_st

find the ratio of radii Earth:Pluto this is the linear scaling factor the cube the answer to find how many pluto's make the earth

2. anonymous

or the long way use the volume of a sphere $V = \frac{4}{3} \pi r^3$ find the volume of the earth find the volume of pluto then divide Volume of earth by volume of pluto