There is no "best" approximation. The square root is irrational and so it is a non-terminating, non-recurring decimal so adding one more digit will always make it a better approximation.
C = πd80 = πd80/π cm = d25.46 = d (decimal approximation)25.46 / 2 = r12.73 cm = r (decimal approximation)
10/13 as a decimal is a recurring decimal of 6 digits: 0.769230769230... An approximation would be 0.769
There is no finite-length decimal number for pi. The decimal for pi goes on until infinity! The most commonly used approximation is 3.14
It is about 9.487 rounded to 3 decimal places
0.341 is the decimal form of 341 over 1000.
341/1000 = 341 ÷ 1000 = 0.341
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It is: (341-127)/127 times 100 = 168.504% increase rounded to three decimal places
There is no "best" approximation. The square root is irrational and so it is a non-terminating, non-recurring decimal so adding one more digit will always make it a better approximation.
3.142 rounded to 3 decimal places
C = πd80 = πd80/π cm = d25.46 = d (decimal approximation)25.46 / 2 = r12.73 cm = r (decimal approximation)
11/9 = 1.222... recurring.
10/13 as a decimal is a recurring decimal of 6 digits: 0.769230769230... An approximation would be 0.769
There is no finite-length decimal number for pi. The decimal for pi goes on until infinity! The most commonly used approximation is 3.14
That's an approximation of "pi", truncated after ten decimal places.
That would be .2222222222 (or .2 rounded).