What is the diameter of a circumference that's 37.68

Question

Use 3.15 for pi

 

 

Answer 1

Since C = (pi)d, you may successfully conclude that d = C ÷ pi.

 

For true accuracy, use pi ≈ 3.141592654(good to 9 decimal places).

 

The directive to use 3.15 is wrong, in many ways.