Using 3.14 as Pi the area of circle is: 282600.0
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300. (Doubling the radius multiplies the area by four times.)
The radius of the circle is 9.772 cm rounded to 3 decimal place and the circumference of the circle is 2*pi*9.772 = 61.399 cm rounded to 3 decimal places
if circle diameter is 300, then its radius r is 150 (half the diameter)and the area isπr2 = 2250πwhich is approx 2250*3.14 = 7065 square yards (don't forget the "square")
Approximately 58.42 (58.4180452) acres.
Circumference = pi*diameter = 942.5 metres.