Pi is the ratio of circumference to diameter. C/d=pi always!!!
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Circumference = pi X diameter so.......... diameter = circumference/pi 50 feet/pi = 15.92 feet call it 16 feet
diameter X pi = circumference What you call edge is usually called circumference. pi = 3.1416
In the case of a circle, it is common to call this "circumference" instead of "perimeter". Just multiply the diameter by pi.
diameter x pie = circumference remember to call it circumference idk about your teachers but mine are picky answer: 50.26 (rounded)
Circumference = 2 * Pi * rr(radius) = diameter/2 = 31/2 = 15.5Circumference = 2 * pi * 15.5= 97.4 units==========( you could call it 97 units )