SubArea: Power and radical functionsLevel: CProject ID: 1003159101Source Problem: 2010014805Accepted: 1Clonable: 1Easy: 0Choose the function that describes the dependence of a cube volume V on the length of its space diagonal u.V=3⋅u39; u∈(0;∞)V=u3; u∈(0;∞)V=u33; u∈(0;∞)V=27u3; u∈(0;∞)