Given data:
The size of your bathroom is 9’ x 10’ with 8’ high ceilings
Cost of the marble tile: $35.00/sq. ft.
Area that you will redoing in marble tile is the sum of the area of the 4 walls and the area of the floor.
Area of the floor
![9ft^{}*10ft=90ft^2](https://img.qammunity.org/2023/formulas/mathematics/college/unn2iq00it3w7cdksfba2u4fus0z1ke55g.png)
Area of each 9' x 8' wall:
![\begin{gathered} 9ft*8ft=72ft^2 \\ \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/z65fsy7pian42zlb3rxj91b4bz3f495ra5.png)
Area of each 10' x 8' wall:
![10ft*8ft=80ft^2](https://img.qammunity.org/2023/formulas/mathematics/college/hpmntlcc85zm3hioyvxebqac6g9yc6eqn9.png)
Then, the area you will redoing in marble tile is:
![\begin{gathered} A=90ft^2+2(72ft^2)+2(80ft^2) \\ A=90ft^2+144ft^2+160f^2 \\ A=394ft^2 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/qkm3ezdieqne1wh0wtwx0su7jaojlivm8f.png)
As each square feet cost $35.00 find the total cost of 394 square feet:
![35.00/ft^2*394ft^2=13,790](https://img.qammunity.org/2023/formulas/mathematics/college/tigadv3i9t71643vxo70kpa5g2djmj79l3.png)
Then, the marble tile will cost $13,790