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MrGumby
24 + 4pi

This is because each side is 8 and the arc (using the perimeter of a circle formula) is 4pi. 
musiclover10045
edited for perimter:
 3 sides at 8 yards each = 8*3 = 24 yards


 circumference of circle:  diameter x PI
   8 x 3.14 = 25.12

25.12 / 2 = 12.56

total perimeter = 24 + 12.56 = 36.56 yards  ( round answer as needed)

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