Find the circumference of the circle. give the exact circumference and then an
approximation. use piπalmost equals≈3.14.

If 'D' is the diameter of the circle, then . . .

-- The exact circumference of the circle is  (π · D) .

-- The approximate circumference of the circle is  (3.14 · D) .

I could give you actual numbers if you could give me a diameter
to work with.  Or even just a radius would be good enough.