Step 1:
First, we calculate the average strain, which is given by the formula:
\[
\epsilon_{avg} = \frac{\epsilon_x + \epsilon_y}{2}
\]
Substituting the given values, we get:
\[
\epsilon_{avg} = \frac{19210 \times 10^{-6} + (-610 \times 10^{-6})}{2} = 19210 \times
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