benjamin15361527 benjamin15361527

15-02-2018
Mathematics

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a 40 - inch pendulum swings through an angle of 18 degrees. find the lenght of the arc in inches through which the tip of the pendulum swings.

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agamal91 agamal91

15-02-2018

[tex]l= 2 \pi r \frac{ \alpha}{360} [/tex]
l = 2 *3.14* 40* 18/360 =12.56 inches

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