Question

The perimeter of a certain sector of a chale
is equal to half of the efcle of which ,91 's a
part. The circular m
easure of the angle of the
sector is.​

Answer 1

Answer:Perimeter of sector OPQ=21​×2πr

⇒3600θ​×2πr+2r=πr

⇒3600θ​=2πr(π−2)r​⇒θ=2π−3600(π−2)​=π180(π−2)​degree

⇒θ=π1800(π−2)​×1800π​=(π−2)radians