Question

When doing the diameter of a circle,using the circumference formula c=3.14*d do you spilt the diameter in half? Ex. Diameter is 6,and you change it to 3 and multiply it by 3.14

Answer 1

yes you do split the diameter in half but you also do this for example: Find the diameter of 6 this is what you would do, C= 3.14(3 squared)
3.14(9)
28.26

Answer 2

No you leave it because the equation is 2*pi*r or pi*d