What is the circumference of a 12 yd diameter circle?

The equation for the circumference of a circle is pi d where d is the diameter. In this case, we have a 12yd diameter, so multiply that by pi and you get 37.699111843077518861551720599354

so we have 37 yards.

We have a decimal part, so multiply this by 3 to get any feet:

0.699111843077518861551720599354 x 3 = 2.0973355292325565846551617980621

so we have 2 feet.

We have a decimal part so multiply this by 12 to get any inches:

0.0973355292325565846551617980621 x 12 = 1.1680263507906790158619415767452

So the circumference is 37 yards, 2 feet, 1 inch.