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A 5-inch by 7-inch picture is placed on a rectangular piece of red paper such that a 0.5-inch wide red border is seen along each side of the picture. What is the area of the visible red border, in square inches? I 

drew it out and added .5 to each side or 6x8  and im rly confused

 Dec 14, 2018
 #1
avatar+123 
+3

Subtract the area of the picture from the area of the red paper.

(6*8) - (5*7) = 48 - 35 = 13 inches squared.

 Dec 14, 2018
 #2
avatar+3988 
+2

Yes, you're on the right track. Adding one to each side, we have \(5+1, 7+1\) , so the overall dimensions are  \(6\cdot8\) . Thus, the answer is \(48-35=\boxed{13}.\)

.
 Dec 14, 2018

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