How energy and pressure have the same dimension?

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Solution

I've been trying to fully understand energy density in terms of the equations that explain it. Unfortunately, the internet hasn't been very helpful in clarifying my misunderstanding. One website defines energy density(u) as energy(E) over volume(V):

u=E/V

I also noticed that pressure(P) can be defined in the same way:

P=E/V

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Similar questions

If two quantities have same dimensions ,do they represent same physical content? And how can force and energy density have same dimensions

List - I	List - II
a) Same negative dimensions of mass	I) Pressure, Rydberg constant
b) Same negative dimensions of length	II) Mangnetic induction field, Potential
c) Same dimensions	III) Capacity, Universal gravitational constant
d) Same dimension of current	IV) Energy density, Surface tension

If 2 quantities have the same unit then they must have the same dimension. How?

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