Jawabanmu

2014-06-24T11:30:43+07:00
Diameter A (5, 2) dan titik B (-3, 6)
P = {(5-3)/2, (2+6)/2} = (1, 4) (pusat)
d = √((-3-5)² + (6-2)²) = √(64 + 16)
d = 4√5 cm
r = d/2 = 2√5 cm
persamaannya
(x – a)² + (y – b)² = r²
(x – 1)² + (y – 4)² = (2√5)²
x² - 2x + 1 + y² - 8y + 16 = 20
x² + y² - 2x – 8y – 3 = 0