The exact value could never be expressed as a number, as pi is an irrational number. The integer value would be:
31415926535897932384626433832795028841
If you want a slightly more accurate value:
31415926535897932384626433832795028841.9716939937510582097494
If you want an exact value:
∞
(∫e-x² dx)2 × 1038
-∞
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3.1415926536 is to 10 places but not exact. The only exact value of pi is pi itself. So any exact answer involving pi would include pi in the answer.
Yes, you could if you knew the exact value for pi as well as the diameter of the circle. Multiply the diameter by the exact value for pi to get the circumference. However, it is impossible because the exact value for pi is not known. It is only known to about a trillion decimal places, but the exact value is not known.
3.1428
If the value of pi is the circumference of any circle divided by its diameter then what is the true exact value of pi? Why is it that the exact area of a circle can never be found?
Because 22/7 is the approximate value of pi as a fraction but the exact value of pi has never been determined.