The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the ordered pair for the center.
(x - (- 3))² + (y - 6)² = 10²
(x + 3)² + (y - 6) = 100
77 because 4.9 Times 10 Times 3 equals 147 and 1.4 Times 10 Times 5 equals 70 then you would subtract 70 from 140 and get 77
