The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
27.2222
by using a more accurate thermometer by repeating the measurements between 30% and 50% tin by increasing the number of measurements between 40% and 60% tin by increasing the number of measurements between 50% and 70% tin
No. However repeated measurements can be averaged or otherwise be used to arrive at a more accurate result.
It is 0.3333333 repeating. 1/3 in base 10 percentage is irrational, always use 1/3 when doing calculations in base 10.
The technique described involving repetition above is replication.
155.3333
There is no end to pi. It is an un-repeating, infinite number. For most calculating purposes, 3-4 significant figures is suffice.
127.3333
0.4 repeating = 44.44... repeating %.
It bears repeating is correct.
(1/3)(10.21) = 3.403Or another way... 0.3333 x 10.21 = 3.403 (to 4 significant figures)
The only time you should calculate it instead of storing is when you only use that attribute once. Otherwise, store it to avoid repeating calculations.