How do you work out the outside diameter from a circumference?
Answers:
divide by 22/7 or pi or 3.142
Divide it by pi
circ. = pi * diameter
circumfrence divided by pye * 2 should give diameter.
Divide the circumference by pi ( 3.14 )
ok first off there is no such thing as an outside diameter. The diameter is the distance from one edge of a circle to the other in a straight line. Circumference is the distance around the circle.
circumference = diameter x pi
or
diameter = circumference/pi
there's a silly rhyme our teacher taught us once to remember this kind of thing.
fiddle dee dum fiddle de dee, a ring round the moon is pi times d, and if a hole you want repaired then you must use pi r squared.
The equation for the circumference of a circle is 2*pi*r (r is the radius of a circle, pi is the constant 3.142).
The diameter of a circle is twice the radius (or 2*r) therefore the circumference of a circle is also pi*d (d is the diameter).
So if you measure the circumference and divide it by pi, then you get the diameter.
Hope this helps.
divide the circumference by pi = 3.1416
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