Why is writing only kilometres wrong for India's area?
Answer and explanation
Correct answer: Because square kilometre is needed for area
The governing measurement concept is the difference between length and area. A kilometre, written km, measures a one-dimensional distance, such as the distance between two places or the length of a boundary. Area measures a two-dimensional surface, so the unit must be a square unit: square kilometre, written km². One km² represents a square measuring 1 km by 1 km, and its numerical size is obtained by multiplying the two lengths. Therefore option B is correct. Options A and C misunderstand the purpose of a kilometre, while option D confuses a possible comparative expression with the basic unit of area.
Frequently asked questions
What is the correct answer to this question?
Because square kilometre is needed for area
Why is this the correct answer?
The governing measurement concept is the difference between length and area. A kilometre, written km, measures a one-dimensional distance, such as the distance between two places or the length of a boundary. Area measures a two-dimensional surface, so the unit must be a square unit: square kilometre, written km². One km² represents a square measuring 1 km by 1 km, and its numerical size is obtained by multiplying the two lengths. Therefore option B is correct. Options A and C misunderstand the purpose of a kilometre, while option D confuses a possible comparative expression with the basic unit of area.
Which subject and chapter does this question cover?
This is a Class 11 Geography question. Chapter: India - Location. Topic: India’s size and area.
