The circumference is equal to pi ( 3.14167... ) times the diameter. You do the math.
Since the circumference of a circle is equal to its diameter times pi, the o.d. of a pipe is equal to its exterior circumference divided by pi.
for math
It is equal to a diameter of 10.5 units of length.
A line that bisects a circle and goes through the center of it is the diameter.
the width of a circle
Pi (not "pie") is an important number in math, equal to about 3.14159625. It is the ratio between the circumference and the diameter of a circle; but this number also appears in many other places, even some where the relationship with a circle is not so obvious.
No
DIASMETER
Approximately yes. Circumference is equal to pi times the diameter of the circle, which is 3.14159 times the diameter.
Circumference = pi*Diameter So D = C/pi = 9.42/3.14 (using a crude approximation for pi) and that is equal to 3.
The measurement of 4 mm in diameter is equal to 0. 1575 inches in diameter. It is also equal to 0. 4 centimeters in diameter.