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You can represent numbers as the symbol for that number, like e π (pi) or √2

The numbers above are irrational, meaning they cannot be represented as a fraction of 2 integers. But you can give the numerical value as a decimal approximation:

e = approx 2.7182818285

pi = approx 3.1415926536

√2 = approx 1.4142135624

You would need the numerical value, if you needed to give an answer to a calculation, like 'how many cubic feet of water are in a pool in a shape of a circle, 20 feet diameter, and 4 feet deep', for example.

Nobody wants to see an answer like 400*pi cubic feet. They want to see 1256.64 cubic feet (or 9400 gallons). That's what makes sense to people.

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14y ago
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Q: What is an example of a numeric value?
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