Open the energy-minimized 3D Molecular Models on the book's website for trans-1-tert- utyl-3-methylcyclohexane and trans-1,3-di-tert-butylcyclohexane. What conformations

Question:

Open the energy-minimized 3D Molecular Models on the book's website for trans-1-tert- utyl-3-methylcyclohexane and trans-1,3-di-tert-butylcyclohexane. What conformations of cyclohexane do the rings in these two compounds resemble most closely? How can you account for the difference in ring conformations between them?