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how to find the arc length of a semicircle. Now divide by 2 to find the arc length of the semi circle. Diameter of the original circle.
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The next formula is the circumference of a whole circle. The length of the arc is also halved. The arc length of the semicircle can be thought of as half the circumference of the circle.
Dividing the circle by its diameter halves the circle.
This is going to be equal to eight pi. Then find the blue major arc and its measure. Dividing the circle by its diameter halves the circle. That means the arc length of the semicircle is 1413 units.
