SOLUTION: If a rectangle has a diagonal of 22 inches and a width of 18 inches, how long is the length?

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Question 303522: If a rectangle has a diagonal of 22 inches and a width of 18 inches, how long is the length?
Answer by london maths tutor(243) About Me  (Show Source):
You can put this solution on YOUR website!
Let's length be L
22%5E2+=+18%5E2+%2B+L%5E2
+484+=+324+%2B+L%5E2+
+484+-324+=+L%5E2+
+L+=+sqrt%28160%29+
L = 12.65 inches