What area, in square centimeters, is equivalent to an area of 2 square meters? (1text{ meter = 100text{ centimeters}}) 0.02...
GMAT Problem-Solving and Data Analysis : (PS_DA) Questions
What area, in square centimeters, is equivalent to an area of \(\mathrm{2}\) square meters?
(\(\mathrm{1\text{ meter} = 100\text{ centimeters}}\))
- \(\mathrm{0.02}\)
- \(\mathrm{200}\)
- \(\mathrm{2{,}000}\)
- \(\mathrm{20{,}000}\)
1. TRANSLATE the problem information
- Given information:
- Area to convert: 2 square meters
- Linear conversion: \(1\text{ meter} = 100\text{ centimeters}\)
- Need to find: equivalent area in square centimeters
2. INFER the area conversion relationship
- Key insight: When converting area units, we must square the linear conversion factor
- Since \(1\text{ meter} = 100\text{ centimeters}\), then:
\(1\text{ square meter} = (100\text{ centimeters})^2 = 10,000\text{ square centimeters}\)
3. SIMPLIFY the conversion calculation
- Convert the given area:
\(2\text{ square meters} \times 10,000\text{ square centimeters/square meter} = 20,000\text{ square centimeters}\)
Answer: D) 20,000
Why Students Usually Falter on This Problem
Most Common Error Path:
Weak INFER skill: Students forget that area conversions require squaring the linear conversion factor. They think: "\(1\text{ meter} = 100\text{ centimeters}\), so \(2\text{ square meters} = 2 \times 100 = 200\text{ square centimeters}\)."
This fundamental misunderstanding of how area units scale leads them to select Choice B (200).
Second Most Common Error:
Conceptual confusion about conversion direction: Some students get confused about whether to multiply or divide, especially when seeing large numbers. They might think the answer should be smaller since they're converting to a "smaller" unit (centimeters vs meters).
This leads to confusion and may cause them to select Choice A (0.02) thinking they need to divide.
The Bottom Line:
This problem tests whether students understand that area measurements scale by the square of linear measurements. The key insight is recognizing that 1 square meter contains 10,000 square centimeters, not just 100.