SOLUTION: If the sides of a dining room are 21 feet by 18 feet, what is the length of the diagonal?

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Question 180871: If the sides of a dining room are 21 feet by 18 feet, what is the length of the diagonal?
Answer by Alan3354(69443) About Me  (Show Source):
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If the sides of a dining room are 21 feet by 18 feet, what is the length of the diagonal?
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d%5E2+=+21%5E2+%2B+18%5E2
d%5E2+=+441+%2B+324+=+765
d+=+sqrt%28765%29
d =~27.66 ft