In order to rewrite these values in the standard form, let's calculate the product with the power of 10 from each number.
For the length, we have:
[tex]\begin{gathered} 8\cdot10^4 \\ =8\cdot10000 \\ =80000\text{ meters} \end{gathered}[/tex]
For the thickness, we have:
[tex]\begin{gathered} 5\cdot10^{-6} \\ =5\cdot0.000001 \\ =0.000005\text{ meters} \end{gathered}[/tex]
