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Surface Area = length X width X number of side Volume = height x length X width

Surface Area = length X width X number of side Volume = height x length X width Surface-to-Volume ration = divide the surface area by the volume. Graph. Plot, all on one graph, the following:

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Surface Area = length X width X number of side Volume = height x length X width

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  1. Surface Area = length X width X number of side • Volume = height x length X width • Surface-to-Volume ration = divide the surface area by the volume.

  2. Graph • Plot, all on one graph, the following: • S/V ratio vs. cube size (length in cm); volume vs. cube size (length in cm); surface area vs. cube size (length in cm). 54 27 1 1 2 3

  3. Questions • Which cube has the greatest surface area? Volume? S/V ratio? • What happens to the surface area as the cubes get larger? • What happens to the volume as the cubes get larger? • What happens to the S/V ratio as the cubes get larger? • Proportionately, which grows faster: surface area or volume? Explain. • Which cube has the most surface area in proportion to its volume? • Why do cells need to be small?

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