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How tall is a tower if it casts a shadow 65 ft. long at the same time that a building 160 ft. tall casts a shadow 130 ft. long? I tried using the hypotenuse formula but didn't get the right answer. Help.

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    You need to use similar triangles.2012-06-15
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    $\frac{160}{130} = \frac{x}{65}$ so $x = 80$. "You need to use similar triangles."2012-06-15
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    Thank you very much, I was using the wrong relationships for the proportion.2012-06-15
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    Of course, the canonical way of finding the height of a building is to [offer a barometer to the building manager](http://www.snopes.com/college/exam/barometer.asp).2012-06-15

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