c (circumference) c=pie d

Question

where d is the diameter.
How do i find d to the nearest hundredth when c=39cm?
and i have to solve the formula C=pie d for d.

Answer 1

C = pi * d
39m = 3.14d
39/31.4 = d
?? = d

Answer 2

Thanks.

Answer 3

You're welcome. But please correct my error.

The third line should be:
39/3.14 = d