Answer :
The area of the wall is (15-ft x 21-ft) = 315 square feet
That's the easy part. Now you have to figure out how many
square yards that is.
9 square feet = 1 square yard.
315 square feet = 315/9 = 35 square yards.
The cost of the wallpaper is (35) x ($2) = $70 .
That's the easy part. Now you have to figure out how many
square yards that is.
9 square feet = 1 square yard.
315 square feet = 315/9 = 35 square yards.
The cost of the wallpaper is (35) x ($2) = $70 .
