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Leah is wallpapering 3 same-sized rectangular walls in the living room. Each wall is 10 feet long and 8 feet tall. There is also a rectangular door on one of the walls that Leah won't be wallpapering. It measures 3 feet by 7 feet. The wallpaper she picked out costs $5 per square foot. How much will Leah spend on wallpaper for the living room?

Respuesta :

lbeimborn29
Answer:

$1095

Explanation:

You first have to find out the area of each rectangle. In order to do that you need to use the formula length times width. In this case, the length is 8 and the width is 10. 8 times 10 is 80.

Since there are three walls of the same area, you multiply 80 by 3. This is 240.

Now you need to find the area of the door, you do this by multiplying 3 times 7, which is 21.

Now you will subtract 21 from 240 which is 219.

Since each square foot is $5, you need to multiply 219 by 5. You end up with 1095!
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