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Verified answer
Pusat (2,3)diameter: 8 berarti jari2nya 4
pers.lingkarannya:
(x-2)^2 + (y-3)^2 = 4^2
x^2 - 4x + 4 + y^2 - 6y + 9 = 16
x^2 + y^2 - 4x - 6y - 3 = 0