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A 40 -inch pendulum swings through an angle of 18∘ . Find the length of the arc in inches through which the tip of the pendulum swings

 Apr 17, 2020
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Circumference of circle of which arc is a part is    pi x d  = 80 pi

 

fraction of the circumference   18/360

 

18/360 x 80 pi = .......

 Apr 18, 2020

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