Jari Jard lingkaran3x²+3y²-4x+6y -12=0 adalah​

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Jari Jard lingkaran3x²+3y²-4x+6y -12=0 adalah​

Mapel : mmk
materi : lingkaran

=> r/jari-jari lingkaran
r = sqrt{ frac{a {}^{2} }{4} + frac{b {}^{2} }{4} - c } \ r = sqrt{ { frac{4 {}^{2} }{4} } + frac{6 {}^{2} }{4} - ( - 12) } \ r = sqrt{4 + 9 + 12} \ r = sqrt{25} \ r = 5

Lingkaran

3x² + 3y² – 4x + 6y – 12 = 0

x² + y² – 4/3 x + 2y – 4 = 0

Jari – jari lingkaran

= √((1/2 A)² + (1/2 B)² – C)

= √((1/2 . (-4/3))² + (1/2 . 2)² – (-4))

= √(4/9 + 1 + 4)

= √((4 + 45)/9)

= 7/3 satuan