URGENT PLZ HELP
Find the arc length of semi circle with diameter of 18

Step-by-step explanation:

The formula to find arc length is

where theta is the measure of the central angle and d is the diameter. If we are dealing with a semicircle, the measure of the central angle is 180 degrees. Filling in:

which simplifies a bit to

and a bit more to

AL = 9π. That answer is obviously in terms of π; if you need it in terms of whatever your measurement is (feet, inches, cm, etc.) the answer would be, rounded to the nearest tenth, 28.3 units

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step-by-step explanation:

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