How to find the Center and Radius of a Circle from its Standard Equation
EXAMPLE 1: Find the center and radius of a circle
(x – 1)² + (y – 4)² = 16
SOLUTION:
The standard equation of a circle is:
(x – h)² + (y – k)² = r²
where (h, k) is the center of a circle and r is the radius of a circle.
Compare the given equation with the standard equation of a circle.
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