Algebra 2
posted by Kiki .
Which circle has the largest circumference?
x2 + y2 = 8
(x – 3)2 + y2 = 10
(x + 3)2 + (y + 2)2 = 4
x2 + (y – 2)2 = radical 81

since √81 = 9, I'd say the winner is #2
10 is the largest of 8,10,4,9
largest radius means largest circumference.