Answer
a. 100 L
b. 50 L
Work Step by Step
For the measurement 20,400 L, we have
a. The measurement is only accurate to the 100 place, so the precision is 100 L.
b. The greatest possible error is half the precision, so we have:
$GPE=\frac{1}{2} precision=\frac{100}{2}=50\ L $.
