1. The problem statement, all variables and given/known data How much pressure is needed to compress the volume of an iron block by 0.10%? 2. Relevant equations the bulk modulus of iron= 9*10^10 delta_P= B*Vo/delta_V 3. The attempt at a solution I have tried using random volume for example 1 and 0.01, and 2 and 0.02 but i feel i am way off.