This morning's prompt is 'dream catcher'.

So, back to splatting out land and sea bits. We have a planet and a rectangular world map based on circumference and pole to pole is half of that. Surface area is circumference squared divided by pi or diameter squared, times pi (diameter being circumference/pi and circumference being diameter*pi). You could also find surface area by multiplying diameter times circumference! 8-P

Some ruthless bureaucracy might divide worlds into 1 million km^2 development areas from equator to pole, rounding down some each rough thousand kilometer quad is at least a million, up to a round polar area, the remainder.