Question

Find the circumference, diameter=84cm use 3.14 for pie

Answer 1

3.14 times 84 which is 263.76

Answer 2

The formula used to find circumference is
C=2(3.14 or pie)(radius)
To find the radius you need to divide the diameter by 2:
84/2= 42
So the radius is 42 so you have to do:
C=2(3.14)(42)
So you get a total answer of 263.76cm