Answer:
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The arc length of the semicircle is 15.7
<h3>Calculating Arc length </h3>
From the question, we are to determine the arc length of the semicircle
Arc length can be determined by using the formula,
Arc length = θ/360° × 2πr
Where θ is the angle subtended by the arc
and r is the radius of the circle
In the given diagram,
θ = 180°
and r = 10/2
r = 5
Thus,
The arc length of the semicircle = 180°/360° ×2×3.14×5
The arc length of the semicircle = 1/2×2×3.14×5
The arc length of the semicircle = 15.7
Hence, the arc length of the semicircle is 15.7
Learn more on Calculating Arc length here: brainly.com/question/16552139
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I believe 5 is 3 inches per year because 57 minus 40 and 1/2 is 16 and 1/2, so you divide 16 and 1/2 by 5 and 1/2 which equals 3, so 3 inches per year
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