Write the Word or Phrase That Best Completes Each Statement $$\text { Without using a calculator, explain why } 2 \pi \text { must be greater than } 8 \text { but less than } 16 \text {. }$$

Essay

Write the word or phrase that best completes each statement or answers the question.
- $$\text { Without using a calculator, explain why } 2 \pi \text { must be greater than } 8 \text { but less than } 16 \text {. }$$