Find the 12

Find the equation of the circle with center (3,7) and circumference 8π units.

Result

e = (Correct answer is: e=(x-3)^2 +(y-7)^2 = 16) Wrong answer

Solution:

c=8π=8⋅ 3.1416≐25.1327 r=c/(2π)=25.1327/(2⋅ 3.1416)=4  x0=3 y0=7  (x−x0)2+(y−y0)2=r2 e=(x−3)2+(y−7)2=16

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