Notice that the distance formula results in a real number and that the midpoint formula results in an ordered pair.

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**Interactive**: Distance and Midpoint ]**Given two points find the distance and midpoint between them.**

**Video Lessons:**

- Distance Formula ( Proof and Example )
- Midpoint Formula ( Proof and Example )

**Use the distance and/or midpoint formulas to solve the following.**

**Example**: If the diameter of a circle is defined by the two points (-3, 4) and (7, 4), find the center and radius of the circle. (Hint: diameter = 2

*r*)

**Example**: Find the area of a circle given center (-3, 3) and point (3, 3) on the circle.

**Video Examples on YouTube**:

**YouTube Example**: Find the coordinates of an endpoint given the other endpoint and the midpoint.

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