SOLUTION: A rectangle has sides of length 5 and 8. What is the length of the rectangle's diagonal? Express in radical form.

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Question 885194: A rectangle has sides of length 5 and 8. What is the length of the rectangle's diagonal? Express in radical form.
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
A rectangle has sides of length 5 and 8. What is the length of the rectangle's diagonal? Express in radical form.
applying Pythagorean theorem:
5%5E2+%2B+8%5E2+=+c%5E2
25+%2B+64+=+c%5E2
89+=+c%5E2
sqrt%2889%29+=+c