" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x² + y² - 6x - 10y + k = 0
(-1)² + 2² - 6(-1) - 10(2) + k = 0
1 + 4 + 6 - 20 + k = 0
-9 + k = 0
k = 9
a = (-1/2(A)) = -1/2(-6) = 3
b = (-1/2(B)) = -1/2(-10) = 5
k = 9
r = √(a² + b² - k) = √(3² + 5² - 9) = √(9 + 25 - 9) = √25 = 5
Jadi, jari jarinya sama dengan 5.