In order to calculate the circumference of a circle multiply the radius by itself, then pi.
divide
Pi (3.141...) is used for circles, and circles only. You use it to find the area and circumfrence.
38,025 km
Circumfrence
circumfrence
it is around 3396 kms
the circumference is 378.483
10inches, 12inches, and 16inches
Circumfrence
The correct spelling is "circumference".
18.84
Multiply pi by the diameter.