Question

6min 45sec and 8min 6sec

Answer 1

Hey mate!

Would you please elaborate your question! Seems incomplete...

Answer 2

Answer:

$Stress = \frac{F}{A} = \frac{F}{\pi {r}^{2} }$

$=\frac{100 \times {10}^{3}N }{3.14 \times ( {10}^{ - 2}m) {}^{2} }$