Answer:
12 feet
Explanation:
Perimeter of rectangle = 2( l + b )
40 = 2( 12 + b )
40 = 24 + 2b
40 - 24 / 2 = b
12 feet = b (width)
8 feet
In a rectangle
length (L) = 12 feet
perimeter (p) = 40 feet
width (b) = ?
We know
p = 2(L + b)
40 = 2 ( 12 + b)
40/2 = 12 + b
20 = 12 + b
b = 20 - 12
b = 8 feet
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