Two similar pyramids have lateral areas 8ft^2 and 18 ft^2. the volume of the large pyramid is 108 ft^2. find the volume of the s maller pyramid.
1 answer:
I assume the volume of the larger pyramid is 108 ft^3, not 108 ft^2. The scale factor of edges of two solids is x. The scale factor of their areas is x^2. The scale factor of their volumes is x^3 The areas have a scale factor of 18/8 = 2.25 The length have a scale factor of sqrt(2.25) = 1.5 The volumes have a scale factor of 3.375 108/3.375 = 32 Answer: 32 ft^3
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