the answer to this qestion is two
Two: North America and South America.
2
2
There are four continents in the Western Hemisphere, North America fully in the hemisphere, South America fully in the hemisphere, Antarctica partly, Africa partly.
9
South America is the only continent located entirely in the Western hemisphere.
5 continents do:North AmericaSouth AmericaEuropeAfricaAntarctica
North and South America
Arguably, all continents but Australia are a part of the Western Hemisphere. This means Europe, Africa, Asia, North America, and South America are a part of the Western Hemisphere; South America is the only continent fully in the Western Hemisphere. However, Australia is usually included with Oceania as a continent, and the region of Oceania is a part of the Western Hemisphere, so technically, all continents are a part of the Western Hemisphere.
There are five continents in the Eastern Hemisphere: Africa Antarctica Asia Australia Europe The western third of North Africa is technically in the western hemisphere (west longitude). Only about 25% of the land area of Antarctica is in the western hemisphere.
Asia and Australia are the only continents that are totally not in the Western hemisphere.
Two: North and South America.