Answer:
The estimated digit is 5
Step-by-step explanation:
Significant figures are the digits of a number that carry meaning and contribute to the precision of the given number or measurement.
Whereas, the estimated digit in a number is the last significant figure of the given number or measurement
Therefore, the given measurement
78.5 L: has three significant figures, because the non-zero digits are considered significant figures.
The estimated digit is 5, as it is the last significant figure of the measurement.