1.

In a circle of diameter 40 cm, the length of a chord is 20 cm. Find the length ofminor arc of the chord,

Answer»

Di. of the circle = 40 cmthen rad. = 20 cmnow chord = 20cmthe triangle formed is an equilateral triangle with each side = 20cmΘ = 60°now length of the arc is I = rΘ= 20(60°*п(pi) /180°)= 20π/3cm



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