Q10 of 68 Page 15

AB is a chord of a circle with centre O and radius 4cm. AB is of length 4 cm. Find the areas of the sector of the circle formed by chord AB.


Length of the chord = 4cm


Radius of circle = 4cm


(This chord and radius makes an equilateral triangle)


So,


Q = 60° (in equilateral triangle)


Area of sector =




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