Mechanical Engineering - Thermodynamics - rigid container

[Feodalherren]

Homework Statement

Homework Equations

The Attempt at a Solution

So part A is correct. I'm completely stumped for part B. I feel like not enough information is given. All I know is the temperature. I tried using ratios but it didn't give me the right answer. How am I supposed to look stuff up in tables when I'm only given T?

 

[Feodalherren]

Nevermind. I guess they just wanted me to assume that the water would still occupy the entire volume. Weird assumption but it worked.