What happens to resistance of the conductor when length is doubled

What happens to resistance of the conductor when area of cross section increases

The resistance .R. of a conductor depends on its length T., area of cross-section .A. and the resistivity .p. of the material. What happens to the resistance of the conductor if stretched to double its length?

What happens to the resistance of a conductor when temperature is increased?

What happens to the resistance of a conductor when its aru of cross-section is increased ?

What happens to the resistance as the conductor is made thicket?