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A photograph measuring 4 inches wide and 5 inches long is enlarged to make a wall mural. If the mural
is 82 inches wide, what is the area of the mural?

 

I got 5,379.2 square inches

 

What do you get?

 Oct 19, 2018
 #1
avatar+19811 
+2

82/4 = 20.5 scale factor, so the length is   5 x 20.5 = 102.5

 

Area = L x W  =   82 x 102.5  in^2

 Oct 19, 2018
edited by ElectricPavlov  Oct 19, 2018
 #2
avatar+104804 
+1

Thanks EP...another way

 

[ "Old" area ] x scale factor^2  =

 

20 x  20.5 ^2   =

 

8405 in^2

 

 

cool cool cool

 Oct 19, 2018

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