reversed curves

Situation
A reversed curve with diverging tangent is to be designed to connect to three traversed lines for the portion of the proposed highway. The lines AB is 185 m, BC is 122.40 m, and CD is 285 m. The azimuth are Due East, 242°, and 302° respectively. The following are the cost index and specification:

It is necessary that the PRC (Point of Reversed Curvature) must be one-fourth the distance BC from B.
 

1. Find the radius of the first curve.
     A.   123 m
     B.   156 m
     C.   182 m
     D.   143 m
2. Find the length of road from A to D. Use arc basis.
     A.   552 m
     B.   637 m
     C.   574 m
     D.   468 m
3. Find the cost of the concrete pavement from A to D.
     A.   P2.81M
     B.   P5.54M
     C.   P3.42M
     D.   P4.89M

Compound Curves
A compound curve consists of two (or more) circular curves between two main tangents joined at point of compound curve (PCC). Curve at PC is designated as 1 (R₁, L₁, T₁, etc) and curve at PT is designated as 2 (R₂, L₂, T₂, etc).