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koban [17]
3 years ago
13

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

Mathematics
1 answer:
zlopas [31]3 years ago
6 0
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
<em>square yards</em> 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) = <u>$70</u> .
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