5. The bearing of the back tangent of a simple curve is N 70 E while the forward tangent has a bearing of S 8230' E. The degree of curve is 4.5. Stationing of P.C. is at 10+345.43. It is proposed to decrease the central angle by changing the direction of the forward tangent by an angle of 7, in such a way that the position of the P.T. of the forward tangent and the direction of the back tangent shall remain unchanged. Determine the new radius of the curve and stationing of new P.C. (R new 454.342 m., Sta. PC new 10+305.093)