How to Find Equation of a Circle? (+FREE Worksheet!)
Find the equation of a circle from its center and radius. The equation of a circle with center (h, k) and radius r is (x minus h) squared plus (y minus k) squared equals r squared. If the equation is not in that form, completing the square on both variables gets it there. Exercises for […]
How to Find Arc Length and Sector Area? (+FREE Worksheet!)
Arc length is the distance along part of a circle, and sector area is the slice of the circle enclosed by that arc. Both are fractions of the whole: multiply the circumference or the area by the central angle over 360 degrees. Arc Length and Sector Area, Example 4: Exercises for Arc Length and Sector […]
