12.7 Similar Solids

5 2 2 1 1 yes they are similar scale factor 21 or 21

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Unformatted text preview: = 1.5 2.5 2 2 = 1 1 • Yes, they are similar • Scale factor = 2/1 or 2:1 1.5 2.5 Just for fun, let’s find the SA & V of the previous 2 cylinders. previous 3 1.5 5 2.5 2 S = 2π r +2π rh 2 Scale Factor? V=πr h 1 2 Ratio of Surface Areas? π S= 18π +30π 18 S = 48π V = 45π S= 4.5π +7.5π 4.5 S = 12π V = 5.625π Scale factor squared! 48π 4 2 2 = or 2 12π 1 1 Ratio of Volumes? 45π 8 23 = or 3 5.625π 1 1 Scale factor cubed! Thm. 12.13 - ~ Solids thm Thm. Solids If 2 ~ solids have a scale factor of a:b, If then the corresponding areas have a 2 2 ratio of a :b , & the corresponding...
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This note was uploaded on 02/12/2011 for the course MTG 3212 taught by Professor Jackson during the Spring '11 term at University of Florida.

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