## At A Glance

### Circle Essentials: Finding the Center and Radius (ex.4)

Check out Bas Rutten's Liver Shot on MMA Surge: http://bit.ly/MMASurgeEp1 Mahalo math expert Allison Moffett helps you find the center and radius of a circle. Finding the Center and Radius --------------------------------------------------------------------- Problem: Find the center and radius of the circle with the equation:You are transferring the numbers over once the standard formula and equation are set up the same. Then, use the equation given and plug the numbers into the standard formula.?You would put 4 in place of h, but since h is negative in the standard formula, you make 4 negative as well to cancel out the negatives.?Then, put 2 in place of k. ?The number 5 replaces r as the radius.Since the coordinates to the center of a circle are (h, k), look to the numbers you have just plugged in to find the center of this particular circle. The letter h is now represented by -4, and k is represented by 2.?That makes the center of the circle (-4, 2). The radius of the circle is 5. Read more by visiting our page at: http://www.mahalo.com/circle-essentials-finding-the-center-and-radius-ex-4/
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