Finding square feet for wallpaper

Question

My wall is 9 feet 9 inches wide,

7 feet 10 inches long. How many square feet of wallpaper do I need to purchase to cover my entire wall ??

Answer 1

The width is 9'9" = 9 & 9/12 ft = 9.75 ft

The length is 7'10" = 7 & 10/12 ft = 7.833 ft

The area of the wall is (9.75)(7.833) = 76.375 ft²

Working with inches Width = 117 in, Length = 94 in So, area is

(117)(94) = 10998in² = 76.375 ft²