Asked by Katherine
                Suppose I use a scale on my map where every 3 inches on my map represents 5 miles. If a region on my map has an area of 45 square inches, what is the area of the actual region it represents?
hi I need help with this question, I don't know what to do.
thanks
            
        hi I need help with this question, I don't know what to do.
thanks
Answers
                    Answered by
            Damon
            
    5 mi/3 in
look at squares on map
5 miles * 5 miles = 3 in * 3 in
so
25 mi^2/9 in^2
45 in^2 * (25 mi^2/9 in^2) = 45*25/9 mi^2
= 125 mi^2
    
look at squares on map
5 miles * 5 miles = 3 in * 3 in
so
25 mi^2/9 in^2
45 in^2 * (25 mi^2/9 in^2) = 45*25/9 mi^2
= 125 mi^2
                    Answered by
            Scott
            
    3 in = 5 mi
squaring ... 9 in^2 = 25 mi^2
a = (45/9) * 25 mi^2
    
squaring ... 9 in^2 = 25 mi^2
a = (45/9) * 25 mi^2
                    Answered by
            Katherine
            
    but why are we using these numbers.. why are we multiplying or diving??
    
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