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Areas of Circle, Segments, and Sectors - Lesson 11-6

Today we started by remembering the formula for the area of a circle:

We practiced this by applying it to a couple of problems (these should all be pretty straight forward for you to solve):

At this point we need to define some new areas that are associated with circles.

For each of these, a different technique is used to find its area:

Here are some examples using the information in today's lesson: