What analytical error occurs by mixing units of India's area and coastline?
Answer and explanation
Correct answer: Directly comparing area (square km) with coastline length (km)
Area is a two-dimensional quantity, so it is measured in square kilometres, whereas a coastline is a length measured in kilometres. Directly comparing these two quantities mixes different dimensions and units incorrectly. In contrast, converting all area values to square metres or comparing coastline lengths in kilometres is valid because each comparison uses the same type of quantity. Exam tip: before comparing data, check that both values represent the same kind of quantity in compatible units.
Frequently asked questions
What is the correct answer to this question?
Directly comparing area (square km) with coastline length (km)
Why is this the correct answer?
Area is a two-dimensional quantity, so it is measured in square kilometres, whereas a coastline is a length measured in kilometres. Directly comparing these two quantities mixes different dimensions and units incorrectly. In contrast, converting all area values to square metres or comparing coastline lengths in kilometres is valid because each comparison uses the same type of quantity. Exam tip: before comparing data, check that both values represent the same kind of quantity in compatible units.
Which subject and chapter does this question cover?
This is a Class 9 Geography question. Chapter: India – Size and Location. Topic: Size.
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