5.5 is the radius.
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the radius is half the diameter. radius is half of 11. Which is 5.5.
A circle with a radius of 11 inches has an area of 380.13 square inches.
Oh, dude, the radius of a circle is just half of the diameter, so for an 11-inch circle, the radius would be 5.5 inches. Like, it's just basic math, nothing to lose sleep over. So yeah, the radius is 5.5 inches, but who's really measuring, right?
Twice its radius which is 11 inches
Diameter = 2 * radius = 11 cm