1.2
Area = pi X radius^2
So set Area = 4, and figure it out:
4 = pi X radius ^2
4/pi = radius^2
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The area of a circle with a radius of 4 is: 50.27 square units.
The radius of the circle is 2 units. * * * * * If the area is 4 units, the radius is 1.128 units
The area of a circle with a radius of 4 units is: 50.27 square units.
The area of a circle with a radius of 4 feet is: 50.27 square feet.
A circle has only one measure for its radius. A shape that has a "radius" of 3 in by 4 in cannot be a circle.