find the length of an arc of a circle with substance and angle of 108at the centre is if the radius of the circle is 15 CM.
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Step-by-step explanation:
length of the diameter=r×2=30cm
perimeter of half circle=πr=22/7×15=330/7
length of the arc=330/7-(30)
=(330-210)/7
=120/7cm
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