Asked by hashim
                 sector of radius 7cm has an area of 34.3cm squared. What is the perimeter of the sector
            
            
        Answers
                    Answered by
            oobleck
            
    area of sector is 1/2 r^2 θ, so θ = 2a/r^2 = 68.6/98
arc length s = rθ, so the perimeter is
p = 2r + rθ = 7(2 + 68.6/98) = 18.9 cm
    
arc length s = rθ, so the perimeter is
p = 2r + rθ = 7(2 + 68.6/98) = 18.9 cm
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