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r= 4(3) + (-3).(-2) + 2 / √4²+3²
r= 12+6 + 2 / √16+9
r= 8/√25
r =20/5 = 4
tinggal masukin r nya
(x-a)² + (y-b)² = r²
(x-3)² + (y+2)² = 16
"/" = per