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Why is pi irrational and 3.14 is rational?
pi is an irrational number because it cannot be expressed as a ratio of two integers. In fact, it is a transcendental number, but that is not relevant here. 3.14 is a rational approximation to pi. It is not equal to pi.
Is 3.14 an irrational number a rational number or an integer?
3.14 is rational. However, it is often used as an approximation for pi, which is irrational.
Is 2 times 3.14 a rational Number?
Yes. 2 x 3.14 = 6.28 = 6 7/25 = 157/25 which is rational. If you are using 3.14 as an approximation to {pi}, then 2 x {pi} is not rational.
Is 3.142857142857 an irrational number?
No. It is a rough but rational approximation for the irrational number, pi...Which can expressed as a fraction 22/7.
What is the exact area of a circle with a diameter of 25 m?
The exact area is 625*pi. Since pi is an irrational number, any exact answer must include pi and may not contain a decimal (or rational) approximation of pi.
