A = pi x r2 = pi x d2 / 4
249 = pi x d2 / 4
d2 = 4 x 249 / pi = 317.03691442868101821052397034623
d = 17.81 feet
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249 inches is 20.75 feet. 249 cm is 8.1693 feet 249 miles is 1,314,720 feet
No. The square root of 249 is not a whole number, therefore it is not a square number.
15.779733
A circle, radius 56/2 pi = 28/pi = 8 feet 11 inches which would have an area of 249¾ squinches