45.53 yards
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Diameter = 2 ydRadius = 1 ydCircumference = pi D = 2 pi = 6.283 yd(rounded)Area = pi R2 = pi (1)2 = 3.142 yd2 (rounded)
2yd x 2 x pi = 12.566 yd
Oh, dude, okay, so the area of a circle is πr^2, and the circumference is 2πr. Since the diameter is 7 yards, the radius is half of that, which is 3.5 yards. So, the area would be approximately 38.48 square yards, and the circumference would be around 21.99 yards. But hey, who's counting, right?
Formula for finding circumference is Pi (3.14) X diameter, so 12 yds times 3.14 = yds. Formula for area is Pi (3.14) x radius (1/2 the diameter=6) squared. So the radius squared is 6 X 6 = 36, X 3.14. You can do the math! Area will be in square yds.
r=9yd