$($i$)$ The average normal stress

$avg$

Correct response: $5\mathrm{.}3$MPa$+-1\mathrm{.}0\%$

$($ii$)$ the coordinate for the reference points,

Note: You need to use comma $","$ and space between the normal and shear stress coordinates, e$.$g$.100,5$ or $($use a scale on the axes in MPa$)$

Centre of the Mohr's circle, $($use a scale on the axes in MPa$)$

$*$

$$

and the coordinate for the stresses shown on the figure $($use a scale on the axes in MPa$)$

Section Attempt $1$ of $3$