alleryWhich mathematician's 5th century work gave a 7-digit approximation of pi?
AZu Chongzhi
BAl-Khwarizmi
CJamshid al-Kashi
DSimon Stevin
Answer & Solution
Correct answer: A. Zu Chongzhi
1. The 5th century CE Chinese mathematician is the one named.
2. Zu Chongzhi calculated a 7-digit approximation of pi.
3. Al-Khwarizmi, Al-Kashi and Stevin belong to later centuries.
_Source: Wikipedia, Decimal, section History of decimal fractions_
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