Geometry: An Interactive Journey to Mastery

 Two similar cones have volumes 3 and 375. Find the ratio of their
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 The radius of the Earth is approximately 6400 km. The radius of the Moon is approximately 1600 km.
What is the ratio of the lengths of the equators of these two planetary bodies? What is the ratio of their
surface areas? What is the ratio of their volumes?

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shape of 5 × 5 inch squares and cost $6.39 each. How much will it cost to pave the terrace with these
paving stones?
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the scale factor between the two spheres?