Yes if the diameter is rational. But it need not be if the diameter is irrational.
If the diameter is 3/pi units, for example, then the circumference will be (3/pi)*pi = 3 units.
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No because the circumference of a circle is pi times diameter and pi is an irrational number
The diameter of a circle can be divided into the circumference of a circle pi times. The number pi is about 3.14 in decimal form. Because pi is an irrational number, it cannot be written as a fraction of integers or as a terminal or repeating decimal. The circumference of a circle is said to be pi times the diameter, so by dividing the diameter into the circumference, we would get pi as a quotient.
The Circumference (C) of a circle will ALWAYS be 3.1415926 times its Diameter (D). This irrational number (which goes on forever) is called "pi". C = pi x D This will work for any circle, because as the circle gets bigger or smaller, so does the circumference by the same scale.
Circumference of circle: 2*pi*3.5 = 22cm rounded to the nearest whole number
My understanding is that as the measurement of the circumference of a circle is derived from an equation using "pi" with pi being an indefinite number, the measurement of the circumference of a circle is also an indefinite number, but the figure can be rounded back to a predetermined number of decimal places.