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December 21, 2014

December 21, 2014

Posted by **Joe** on Thursday, July 24, 2008 at 2:56am.

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Two similar rectangular prism have corresponding sides that measure 5 feet and 6 feet.

If the surface area of a smaller prism is 525 square feet, what is the surface area of a larger prism?

- Geometry -
**drwls**, Thursday, July 24, 2008 at 3:01amFor similar figures, area is proprtional to the square of corresponding length dimensions, and volume is proportional to the cube.

In this case, the areas are in a ratio os (6/5)^2 = 36/25.

So the area of the larger prism is

(36/25)*525 = 756 ft^2

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