Answer
Total Volume: 3.2 mL
The first beaker limits the precision of the number since its measurements are limited to one decimal place.
Work Step by Step
Reading the meniscus of each beaker, you find the first beaker to contain 2.9 mL of liquid and the second beaker to contain 0.28 mL of liquid. Adding the two values together, you get $2.9$ mL $+ 0.28$ mL $=3.18$ mL. However, since the first beaker's measurement is limited to one decimal place, the value representing the total amount of liquid cannot exceed 1 decimal place. Hence, the answer is $3.2$ mL.
