A box that can hold 500 ml of water

We made a paper box and we found out if it could hold 500 ml of water
We did this to see if we could measure correctly and make a box and pour 500 ml into it for a decent amount of time 

First, we measured the net out to the right amount to fit 500 ml. Then we cello taped it together and made sure it couldn't leak anywhere. (even though it did) and as you saw 500 ml filled perfectly into the box with the box filled to the brim.