SOLUTION: The width of a rectangle is 3 feet, and the diagonal is 5 feet. What is the area of the rectangle?

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Question 314961: The width of a rectangle is 3 feet, and the diagonal is 5 feet. What is the area of the rectangle?
Answer by solver91311(24713) About Me  (Show Source):
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The width of the rectangle which is known to be 3 feet, the unknown length of the rectangle, and the diagonal that measures 5 feet form a right triangle. 3-4-5 is a Pythagorean Triple, therefore the missing side of the rectangle must measure 4 feet. The area of the rectangle is the length times the width, so 3 times 4 is 12 square feet.


John