For the given rectangular rooms, we will find the area then multiply the area by the cost to find the total cost.
1) Dimensions: 7.5m x 3.5m; Cost = $12.96/m^2
So, area of the room =
[tex]7.5\times3.5=26.25m^2[/tex]The cost will be =
[tex]26.25\times12.96=\$340.2[/tex]so, the total cost = $340.2
2) Dimensions: 17 yd x 10yd;. Cost = $27/yd^2
So, the area of the room =
[tex]17\times10=170\text{ yd\textasciicircum{}2}[/tex]The cost will be =
[tex]170\times27=4590[/tex]So, the total cost = $4,590