Kindly show each step for learning reference: An aluminum bar 3.87 m long has a rectangular cross section 1.35 cm by 5.05 cm Part A What is its

Kindly show each step for learning reference:

An aluminum bar 3.87 m long has a rectangular cross section 1.35 cm by 5.05 cm 

Part A

What is its resistance?

Part B

What is the length of a copper wire 1.50 mm in diameter having the same resistance?