The size of the Australian is the size of the moon?

The land area of Australia is 7,692,024 square kilometers.
If it was a circle, that would be a circle of radius = 1565 km
The radius of the moon is 1737 kilometers, or about 10% larger.

We look at the moon from a distance of 380 thousand kilometers. If you looked at Australia from the same distance, it would only look a little smaller.