Area Of Sector And Segment

                     Lesson 1

Problem:   In circle O, the radius is 110, and the measure of minor arc MN is 80 degrees. Find the length of

         minor arc MN to the nearest integer.

Solution    Arc length = (Central angle /360°) x circumference

Step 1:       

Solution   Arc length = 80°/360° x 2 x π x r

Step 2:

Solution    = 80°/360° x 2 x 3.14 x 110 = 15.351

Step 3:

Solution    The answer is: 15.351

Step 4:          

                                                            Complete      

                                                           Try two practice problems:  

Do the following:

A.		Find the area of shaded sector shown in fig.  The radius of the circle is 35 units and the length of the arc measures 35 units
B.		There are 3 equal segments in semi circle O. If the radius of circle is 20. What is the area of each segment?

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