SOLUTION: A square has a diagonal 20 inches long. Find the perimeter of the square. Round your answer to the hundredth place.

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Question 1174783: A square has a diagonal 20 inches long. Find the perimeter of the square. Round your answer to the hundredth place.
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
If each side of the square has length s then the diagonal +d is related to s by:
+s%5E2+%2B+s%5E2+=+d%5E2+

+2s%5E2+=+d%5E2+

+s%5E2+=+d%5E2%2F2+

+s+=+d%2Fsqrt%282%29+