You have done 2945 x 60 = 176700
1 minute = 1nm and there are 60 minutes in a degree. So 29 degrees -> 29 x 60 = 1740nm
and then add the 45nm for the 45 minutes -> 1740 + 45 = 1785nm
For the Question you asked first. 30 15' S to 14 00' S -> 16 x 60 +15 = 975nm
Use your conversion of 1.852 -> 975 x 1.852 = 1805.7km Answer D.