Hugo is making a picture frame for a photo of his family The

Hugo is making a picture frame for a photo of his family. The photo is 8 inches by 10 inches. If the wood for the frame costs 50 cents an inch, how much will the wood for the frame cost?

Solution

To answer this question, you need to know the perimeter of the frame. For a rectangle, the perimeter is 2I + 2w. If w = 8 and I = 10, then the perimeter = 2(8) + 2(10) = 36 inches. At $0.50 per inch, multiply 36 × $0.50 to get the price of the wood.

36 × $0.50 = $18.00