Final answer:
The expression that has a value between 7 and 8 is B) 2π.
Step-by-step explanation:
The expression that has a value between 7 and 8 is B) 2π.
To determine this, we can roughly estimate the value of each expression:
- √50 ≈ 7.07
- 2π ≈ 6.28
- √40 ≈ 6.32
- √60 ≈ 7.75
- π² ≈ 9.87
Among these options, only 2π has a value between 7 and 8. Therefore, the correct answer is B) 2π.