A circle with a radius of 50 units has a circumference of 314.16 units.
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The radius is 7.96
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
The radius will be 7.96 yards.
circumference of a circle = 2 * pi * radiusso 2 * 3.14159 * 50 = 314.159 metres
If a circle circumference is 30 the radius is: 4.77