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The perimeter of a certain sector of a circle is equal to half that of the circle of which it is a sector. Find the circular measure of the angle of the sector. a. (π-2) radian b. (π+2) radian c. π radian d. (π-3) radian

Rohan Shorey , 12 Years ago
Grade 11
anser 1 Answers
pankaj kumar raman

Last Activity: 12 Years ago

perimeter of sector= 2r+ Θ/2∏ .2∏r

                           = 2r + Θr

 

perimeter of circle=2∏r = 2 .(2r+ Θr)

                         =∏=2+Θ

                         =>Θ=∏-2 ans.       

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