Question

Sale in Victoria 38 degrees S and Hobart in Tasmania 43 degrees S both lie on the same meridian 147 degrees. What is the straight line distance between these two Australian towns. Radius of sphere 6400 km

Answer 1

is it 38 +48 = 86
86/360 x 2 x pie x 6400 Is this correct?

Answer 2

I assume is the same as the previous one, they're asking for the Arc's length, so do it like the previous one

Answer 3

38 degrees S and Hobart in Tasmania 43 degrees S

can you look at a globe. 38 degrees south is close to 43 degrees south
(south means south of the equator)

You want the difference between 43 and 38

Notice this is different from say, 38 degrees SOUTH and 43 degrees NORTH
where you would add them.

Answer 4

maybe this will help
http://www.learner.org/jnorth/tm/LongitudeIntro.html