Geometryeasy · Past Paper
The length of the arc of a semicircle with radius 'r' is:
Api * r
B2 * pi * r
Cpi * r^2
Dpi * r / 2
✓ Correct Answer: A — pi * r
The circumference of a circle is 2*pi*r, so the arc length of a semicircle is half that, which is pi*r.
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