Tentukan pusat dan jari jari lingkaran jika diketahui (x-2)²+(y-1)²=16

Penjelasan dengan langkah-langkah:

(x-2)^2 + (y-1)^2 = 16

X2 – 4x + 4 + y2 – 2y + 1 = 16

X2+Y2 – 4X – 2Y – 11 = 0

Pa = – (-4) : 2 = 2

Pb = – (-2) : 2 = 1

Pab = ( 2,1)

r^2 = a^2 + b^2 – C

= 2^2 + 1^2 – (-11)

= 4 + 1 + 11

= 16

r = 16^0.5

r = 4