Which decimal value of Pi is given in the material?

• A. 3.14159
• B. 3.14
• C. 22/7
• D. 3.142

Answer: (D)

Pi is often represented with a specific number of digits after the decimal, depending on how precise the material requires. In this case, the material uses a three-decimal approximation. Pi is about 3.1415926..., and when you round to three decimal places you get 3.142. That’s why 3.142 is the value given. The other options correspond to different levels of precision or a different form: 3.14159 has five decimals, 3.14 has two decimals, and 22/7 is a common fractional approximation whose decimal is about 3.142857, not the three-decimal value used here. So the correct choice matches the specified precision in the material.