Geography Application : Earth's total land area is about $$148428950 \,km^2.$$ The land area of Asia is about 30 per cent of this total. what is the approximate land area of Asia to the nearest square km ?
Total land area on the Earth $$= 148128950$$ sq. km
Land area of Asia $$= 30\%$$ of $$148128950$$ sq. km
$$= \dfrac{30}{100} \times 148128950$$
$$= 44528685 \,km^2$$