In Fig. 8.4, the comparative areas of the continents are given:

What is the ratio of the areas of

(a) Africa to Europe

(b) Australia to Asia

(c) Antarctica to Combined area of North America and South America.

By counting the number of squares under each continent we can get to know the areas as follows

Africa = 26 sq. units

Europe = 10 sq. units

Australia = 8 sq. units

Asia = 44 sq. units

Antarctica = 13 sq. units

North America = 17 sq. units

South America = 18 sq. units

(a) ratio of area of Africa to Europe = =

Divide numerator and denominator by 2 we get

ratio of area of Africa to Europe = = 13:5

(b) ratio of area of Australia to Asia = =

Divide numerator and denominator by 4 we get

ratio of area of Australia to Asia = = 2:11

(c) ratio of area of Antarctica to combined area of North America and South America = = = = 13:35