What is the length of the arc for the given curve?
Radius 270.00
Tangent in N 15°15' E
Tangent out N 20°15' E
A)2.354 ft
B)23.54 ft
C)235.40 ft
D)None of the above

Question

Quizplus · Accepted Answer

The length of the arc for the given curve is 23.54 ft.
Solution
Use the horizontal circular curve formula
L = R x r (expressed in radians)
Where L = length of arc
R = radius = 270.00
r = central angle
1. Convert angle from degrees into radians
Angle in radians = (angle in degrees) x ?/180
= (20.25 - 15.25) ?/180 = 0.0872 radians
2. Determine length of arc
L = 270.00 (0.0872) = 23.54 ft

What Is the Length of the Arc for the Given