Per NCERT §1.3.3 Ex 1, the area of a rectangle 16.2 cm × 10.1 cm with each ±0.1 cm uncertainty is approximately which?
A164 ± 1 cm²
B164 ± 3 cm²
C160 ± 5 cm²
D163 ± 2 cm²
Answer & Solution
Correct answer: B. 164 ± 3 cm²
NCERT §1.3.3 Ex 1: relative errors 0.6% + 1% = 1.6% × 163.62 ≈ 2.6 cm² → 164 ± 3 cm².
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