Radius is approximately 4.6177
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1.2 Area = pi X radius^2 So set Area = 4, and figure it out: 4 = pi X radius ^2 4/pi = radius^2
is a set of point in the plane of the circle whse distance from the center are greatertan the radius
false
The set points whose distance from the center of the circle that is less than the radius. A disk.
a circle