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# How do you find the centre and radius of a circle using the equation of a circle?

2 years ago

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Rosalinda Hand

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The equation of a circle is a wonderful way to display information about the circle itself.

Let's look below at an example of a circle equation in its proper form:

In order to find the centre of the circle, we simply look at the values within the brackets. The centre in this case would be (2, 4) .

The radius is the square root of the right hand side of the equation. In this case it would be r = 4.

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