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When calculating a problem involving pi, the preferred value is usually 3.14. In some cases using 22 divided by 7 is acceptable even though a different answer is achieved. It will depend mainly on how far the answer needs to be rounded.

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Q: What should prefer the value of pi 3.14 or 22 divided by 7if 22 divided by 7 multiply by 784 then you get different answer then using 3.14 multiply by 784?
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