Asked by Blinkz
                A sector of a circle of radius 7cm subtends angle 270° at the centre. Calculate a. Length of arc b. Area of sector c. Perimeter of sector
            
            
        Answers
                    Answered by
            oobleck
            
    easy way: 270° is 3/4 of a circle, so the
arc is 3/4 * 2πr
area is 3/4 * πr^2
But, using the same logic, you have 270/360 * 2π = 3π/2, so
arc is rθ = 3 * 3π/2
area is 1/2 r^2 θ = 1/2 * 9 * 3π/2
perimeter = arc + 2 radii = 9π/4 + 2*3
    
arc is 3/4 * 2πr
area is 3/4 * πr^2
But, using the same logic, you have 270/360 * 2π = 3π/2, so
arc is rθ = 3 * 3π/2
area is 1/2 r^2 θ = 1/2 * 9 * 3π/2
perimeter = arc + 2 radii = 9π/4 + 2*3
                    Answered by
            Brandi
            
    2x+14 radius 270_2=12
    
                    Answered by
            Brandi
            
    BODMAS operation is allow in any equation try and use "bodmas" to solve equation. math is the simple work in life and everything in life contain caculation
    
                    Answered by
            Lekan
            
    Answer my question
    
                    Answered by
            Norman
            
    I don't get the answer 
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                    Answered by
            Aliameen
            
    The Real answer
    
                    Answered by
            Favour
            
    I don't understand the solving
    
                    Answered by
            Joy
            
    I don't get the answer
    
                    Answered by
            Bitrus HoLii
            
    33
    
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