Best Answer

Very often. Many physical constants cannot be determined exactly, only approximated. For calculations estimates are used for important mathematical constants, such as pi and e.

I would hazard a guess that no continuous physical measure is known accurately - unless by definition. It may be known to a very high degree of accuracy but measurement errors, random errors and, if nothing else, quantum effects will probably prevent perfect knowledge.

Second, total accuracy is often unnecessary. People on Answers.com often give answers to many decimal places - usually way beyond what can be justified. If you have the radius of a circle accurate to 3 siginificant figures and want to calculate the circumference, there is absolutely no point in using a value of pi that is accurate to a greater degree. Use the appropriate estimate and save yourself a lot of bother.

Q: When would scientist use estimate numbers?

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the answer is yes because you can estimate any numbers

You could use 250 and 750.

mendel

use compatible numbers to estimate each difference 84-36

An engineer or scientist.

Related questions

When working with very large numbers or very small numbers and they would use a system of numeracy known as scientific notation.

I would use 40 for the 38 and 50 for the 51. 90 would be my estimate.

5.6261

50.0000.000

gregor mendel

the answer is yes because you can estimate any numbers

A scientist would not use a graph to explain the methodology.

A scientist would not use a graph to explain the methodology.

17 and 4: sum is 21.

gregor mendel

you can use whole numbers

3.8667