n $2$: $(4$ Marks$)$

rtition with three layers of bricks is to be constructed, the number of total bricks is ncluding the waste $(10\%$ waste$),$ block dimensions are $Z^{\text{'}\text{'}}0\mathrm{.}875Y^{\text{'}\text{'}}1\mathrm{.}2x^{\text{'}\text{'}},$ the of hole circle is $2^{\text{'}},$ and the total cost for the whole partition is $$4860,$ and the cost per uare foot is $$\frac{18}{f}{t}^2.$ Estimate the brick dimensions $(Z,Y,$ and $x)$ in inches.