*solved*Physics Problem: Archimedes' Principle question

[Riddleman]

Hey guys, I'm doing this question for my Physics class, and for some reason I keep getting the wrong answer. My answer: 4.39x10^-4 m3. Correct answer: 2.7x10^-4 m3. Please help don't know why I;m getting this wrong.
Question 41: Chapter 11 Fluids.

 

[Darien]

Buoyant force is the force on the displaced fluid

so F1 - F2 = FB

which is equal to

water density * volume * gravity

 

[Riddleman]

Thanks got it.