find the centre and radius of the following circles(x - 3)²+(y-1)² = 9
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Answer:
centre = (3,1)
radius = 3 units
Step-by-step explanation:
Given,
(x - 3)²+(y-1)² = 9
it is in the form of general equation of the circle
x² + y² = r²
centre = (h,k)
centre = (h,k) = (3,1). [since, h = x -3; k = y - 1]
r² = 9
taking square root on both sides
r = 3 units
Therefore, the centre and radius of the is (3,1) and 3 units.
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