Question 880873
Since the short length is 5 , the longer side = {{{5*((1 +sqrt(5))/2)}}}
The perimeter = 5 + 5 + {{{5*((1 +sqrt(5))/2)}}} + {{{5*((1 +sqrt(5))/2)}}}
= 10 + {{{10*((1 +sqrt(5))/2)}}}
= 10 + {{{5*((1 +sqrt(5)))}}}
= 10 + {{{((5 +5*sqrt(5)))}}}
= 15 + {{{5*sqrt(5)}}}