Cape Town 0
H
B
A
029
N
3012
935
384
M
1.9.1
192
1.9.3
19.4
What name is given to the lines on the map joining places of equal
pressure?
What is the isobaric interval on this map?
13x1)(2)
Name the low pressure cell, labelled C
{1x2)(2)
At what time was this map drawn according to the South African
Standard Time (SAST)?
(1x1)(2)​

Anstobacco uses;  

Your answer would be 625,000,000.

Each meridian forms half of a great circle, assuming a spherical earth. meridians intersect lines of latitude (parallels) at right angles. the spherical earth is divided into  360 degrees   east-west. lines of longitude range from 0° to  180° to the east and from 0° to -180 ° to the west of the prime meridian.

Could you post a picture of the number line?