Adding to Dale's answer, the dimensions of a dime are $7.91$ mm diameter and $1.35$ mm thick. So the volume is $66.34$ mm$^3$.

If you spread that out over a football field with an area of $7200 \cdot 10^6$ mm$^2$, the thickness is $9.21 \cdot 10^{-9}$ mm. Or about $1/10^{th}$ of an atom thick.

Adding to Dale's answer, the dimensions of a dime are $17.91$ mm diameter and $1.35$ mm thick. So the volume is $341.1$ mm$^3$.

If you spread that out over a football field with an area of $7200 \cdot 10^6$ mm$^2$, the thickness is $4.72 \cdot 10^{-8}$ mm. Or about $1/2$ an atom thick.