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22 July, 16:12

Wallpaper cost $2 per square yard how much would it cost to cover a rectangular wall that measures 15 feet by 21 feet

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  1. 22 July, 16:15
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    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.
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