Question

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

Solution

Diameter$$=40$$Radius$$=20$$Length of chord$$=20$$It is an equilateral triangle$$\theta =60°$$Length of minor arc$$=r\theta$$$$=20\times \cfrac { \pi }{ 6 }$$$$=\cfrac { 10\pi }{ 3 }$$Mathematics

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