Respuesta :
First find the area of the bathroom . 9ft times 8.5 ft = 76.5 sq ft
76.5 sq ft * $4 = $306
76.5 sq ft * $4 = $306
You will need to find the area by multiplying the length and width. 8 1/2 can also be written as 8.5, then we multiply the result by 4 to find out how much money she needs to pay. Since it's $4 per square, it only makes sense to multiply the total tiles by 4. You can see how I solved in the picture provided. So she will have to pay $306