That curved line is known as an arc. So technically, you're looking for the length of the arc that is formed from a sector of 168 degrees on a circle with radius 38.
Arc EF = (38*2*pi)*(168/360) = 532pi/15
Arc EF = (38*2*pi)*(168/360) = 532pi/15
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Arc length = radius of arc * angular extent measured in radians
s = rΘ
s = 38(168*π/180) (assuming the 168 is measured in degrees and has to be converted to radians)
s ≈ 111.42
(Consider what is the arc length of a complete circle? The circumference. What is the circumference ? πD which is the same as 2πr = rΘ since the angular extent is 2π)
s = rΘ
s = 38(168*π/180) (assuming the 168 is measured in degrees and has to be converted to radians)
s ≈ 111.42
(Consider what is the arc length of a complete circle? The circumference. What is the circumference ? πD which is the same as 2πr = rΘ since the angular extent is 2π)
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EF = 168*2*pi*38/360 = 111.42