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# What is the diagonal length of a rectangle that is 80 inches long and 60 inches wide?

Updated: 4/28/2022

Wiki User

11y ago

Because the diagonal would be the hypotenuse of a right triangle, its length is the square root of the sum of 802 square inches and 602 square inches, which is exactly 100 inches.

A quicker and easier way to determine the length of the diagonal is to recognize right away that you are working with a 3-4-5 right triangle, one of the classic forms used a lot in education, especially appealing because the length of every side is a whole number. The one in this problem is scaled by a factor of 20, but if you recognize the 3 to 4 ratio between the sides or the 3 to 5 or 4 to 5 ratios between a side and the hypotenuse, your work becomes a lot easier.

Wiki User

11y ago

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Q: What is the diagonal length of a rectangle that is 80 inches long and 60 inches wide?
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