A tensile test is conducted on a rectangular cross$-$section steel alloy bar with dimensions $6\mathrm{.}25$ mm x $37\mathrm{.}5$ mm and a initial length of $203$ mm$.$ The results obtained from the experiment are given in the table below. Using these data, answer the following questions.

For this material;

a$)$ Draw the stress$-$strain curve.

b$)$ Calculate the modulus of elasticity.

c$)$ Determine the yield strength using a $0\mathrm{.}2\%$ offset strain and plot it on the graph $($if necessary, the relevant part of the graph can be zoomed in$).$

d$)$ Calculate the tensile strength.

e$)$ Specify the ductility of the material as elongation.

f$)$ Calculate the toughness.

g$)$ Calculate the modulus of resilience.

h$)$ Tensile tests were conducted on five different samples from this material, and the following tensile forces were determined:

$313\mathrm{.}6-314\mathrm{.}5-315\mathrm{.}2-316\mathrm{.}6-318\mathrm{.}4$ kN

Calculate the average tensile force, standard deviation, and coefficient of variation.

i$)$ Specify where this material is used in civil engineering. $($Specify the reference from which you obtained this information, such as a book, journal, etc.$)$

j$)$ If the material is loaded up to $305$ kN and then unloaded, calculate the modulus of elasticity, yield strength, tensile strength, and ductility for the next loading condition.

k$)$ Draw the true stress$-$strain curve along with the engineering stress$-$strain curve.

NOTE: Excel software can be used for calculations.$\backslash$table$[[\backslash$table$[[$Load$],[(kN)$