Answer:
Exact arc length = 6pi meters
Approximate arc length = 18.84 meters (when using pi = 3.14)
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Explanation:
Consider a full circle with radius 6 meters.
The perimeter around the circle, aka the circumference, would be:
C = 2*pi*r = 2*pi*6 = 12pi
However, we only want half of this curved distance for a semicircle.
Therefore, we cut 12pi in half to get 6pi as the exact arc length.
The approximate arc length is found by replacing pi with its decimal value and computing. For instance, if we were to use pi = 3.14, then 6pi = 6*3.14 = 18.84 would be the approximate arc length. Use more decimal digits of pi to get a more accurate answer.
