The rectangle below has an area of $15k^4+35k^3+20k^2$ square meters. The width of the rectangle (in meters) is equal to the greatest common monomial factor of $15k^4, 35k^3,$ and $20k^2$. **What is the length and width of the rectangle?**  $\text{Width} = $ [[☃ expression 1]] meters $\text{Length} = $ [[☃ expression 2]] meters