Andrea is preparing an installation manual for a cell-phone tower to be used in a European country. The tower specifications are in imperial units, and she must convert them to SI for their client. The specifications state that the signal for the cell-phone tower covers a circular area of radius 2.5 mi. What is this area in SI units ?
Question about units and area of a circle?
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circles
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1Where's this question from? (Looks word-for-word like [this question](http://answers.yahoo.com/question/index?qid=20121019183159AAfXcWw) at Yahoo! Answers.) What progress have you made? – 2012-10-20