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How do you find a circumference of a circle if the radius is a fraction?
The circumference is 2*pi*radius. It does not matter if the radius is an integer or a fraction.The circumference is 2*pi*radius. It does not matter if the radius is an integer or a fraction.The circumference is 2*pi*radius. It does not matter if the radius is an integer or a fraction.The circumference is 2*pi*radius. It does not matter if the radius is an integer or a fraction.
Is 22 over 7 a rational number?
Yes. A rational number is defined as any integer divided by any (nonzero) integer, so 22/7 is rational.You're probably asking because some people say that Pi is equal to 22/7 (I also remember being told this once as a kid). This is false. The constant Pi is an irrational number, which means that it cannot be expressed exactly as one integer divided by another integer, or as a finite decimal expansion. 22/7 is a close approximation of Pi, to about three digits, but it does not equal Pi.
What times pi is a whole number?
If n is any integer, then (n/pi) times pi is a whole number.
What is the measurement for which the sine is at its maximum?
It is pi/2 + 2*k*pi radians for integer k.
What are some examples of a fraction but not a rational number?
A rational number is a fraction with an integer in the numerator, and a non-zero integer in the denominator. If you consider pi/2, pi/3, pi/4 (common 'fractions' of pi used in trigonometry) to be 'fractions', then these are not rational numbers.
