transistor problem?

Question

If the dc base current of a transistor with an hFE of 51 is 87 mA, then the approximate value of re’ is ________ohms

Answer 1

For a silicon bipolar junction transistor (BJT) transistor I would say Vbe=.7v and then
Re=Vbe / Ie
Re= .7v/[(51+1) 87E-3]
Re=0.155 ohms