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# similar solids

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The solids are similar.  Find the surface area S of the red solid.

Mar 9, 2021

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The ratio of the first solid to the second is 4:6, or 2:3.

When you square that, the ratio is 4:9, which is what we use to find the surface area of the red solid.

Surface Area of the red solid = $$(\frac{3}{2})^2 \cdot 336 = \frac{3024}{4} = 756$$