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The ratio is 57 cubed. This answer does not depend on the fact that you are comparing two similar pyramids; it works the same for two cubes, two spheres, etc. - in general, for any two similar 3D objects.

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7y ago
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7y ago

A volume is a length by a length by a length. Therefore the ratio of volumes is the cube of the ratio of lengths.

ratio lengths is 5 : 7

→ ratio volumes is 5³ : 7³ = 125 : 343

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7y ago

The ratio is 125 : 343.

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Q: What is the ratio for the volumes of two similar pyramids given that the ratio of their edge lengths is 5 to 7?
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