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jmc

prealgebra senior

Problem

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?
Solution
The piece of red paper must have dimensions of 6 inches by 8 inches in order to have a 0.5 inch border on each side. The area of the paper is 48 square inches, of which square inches are obscured by the picture. Therefore, the area of the visible red border is square inches.
Final answer
13