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OpenStudy (anonymous):
two spheres of the same density have the ratio of 4 to 9 in surface area. if the small sphere weighs 10kg what does the sphere weigh
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OpenStudy (anonymous):
33.75
OpenStudy (anonymous):
how did you get that though?
OpenStudy (anonymous):
surface area is directly proportional to r^2 so ratio of radius=2:3 and volume of sphere is directly proportional to r^3 so weigh=10(2/3)^3
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