SOLUTION: Find the perimeter of a golden rectangle with a shorter side of length 5.

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Question 880873: Find the perimeter of a golden rectangle with a shorter side of length 5.
Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
Since the short length is 5 , the longer side = 5%2A%28%281+%2Bsqrt%285%29%29%2F2%29
The perimeter = 5 + 5 + 5%2A%28%281+%2Bsqrt%285%29%29%2F2%29 + 5%2A%28%281+%2Bsqrt%285%29%29%2F2%29
= 10 + 10%2A%28%281+%2Bsqrt%285%29%29%2F2%29
= 10 + 5%2A%28%281+%2Bsqrt%285%29%29%29
= 10 + %28%285+%2B5%2Asqrt%285%29%29%29
= 15 + 5%2Asqrt%285%29