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For working, the value of pi is usually taken as 22 by 7 or:

A3.41
B1.34
C4.13
D3.14
Answer & Solution
Correct answer: D. 3.14
1. Pi is not an exact fraction. 2. Two approximations are in common use. 3. One of them is 3.14. _Source: syllabus Mathematics Class X, Chapter 12, Areas Related to Circles._
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