Per NCERT, ZU CHONGZHI's 'Close Ratio' (Milü) approximation of π is which fraction — accurate for over 800 years as the best rational approximation?
A377/120 ≈ 3.14167
B355/113 ≈ 3.1415929
C22/7 ≈ 3.1428
D√10 ≈ 3.1622
Answer & Solution
Correct answer: B. 355/113 ≈ 3.1415929
Per NCERT, Zu Chongzhi (480 CE) found 355/113 as the 'Milü' — accurate to 6 decimal places. The other approximations are by different mathematicians and less accurate.
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