A circle with a radius of 10 meters has an area of 314 square meters.
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Well, honey, a circle with a radius of 100 meters has an area of approximately 3.14 hectares. So, there you have it, darling, just over 3 hectares in that circle. Hope that clears things up for you!
Area of a circle: pi*radius squared
Area of a circle: pi times radius squared
acre = 43,560 square feet = 4,840 square yardsArea of a circle = (pi)·(radius)2 = (pi)·(200)2 = 125,663.7 square yards = 25.964 acres (rounded)
The formula for the area of a circle is pi (3.141265...) times the radius squared. Since half of the diameter is the radius, plug that number into the formula to get the total square feet.