(Its Out Of Order)
Is this beaker the appropriate tool for measuring volume? - No
Pic.2 What does each graduation line stand for? - 1 mL
Pic.3 What does each graduation line stand for? - 1 mL
Pic.4 What does each graduation line stand for? 50 mL
Now for the volume I can't tell you the answer as I can't see it well,but take a sticky note or a piece of paper and but it at the bottom of the curved line that the water makes in the beaker.The meniscus is where it should be.
The meniscus is the curved upper surface of a liquid in a tube.
Then you're get your answer make.