I need solve this questions

(31 points) A cylindrical rod has a length of 60 cm and a radius of 4 cm is suspended vertically. When an object of mass 950 g is hanged from the end of the rod its length extends to 80 cm. 1) (4 points) the amount of stretch AL = m 2) (2 points) In the formula- sheet provided, which equation can be used to calculate the stain? 3) (4 points) The strain = 4) (4 points) The cross-sectional area of the rod is A = m2 5) (2 points) In the formula- sheet provided, which equation can be used to calculate the stress? 6) (4 points) The stress = N/m2 7) (2 points) In the formula- sheet provided, which equation can be used to calculate the Young's Modulus? 8) (5 points) The Young's modulus for this material Y = N/m2 9) (4 points) If the cross-sectional area of the rod increases, the Young's modulus of the material