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A doll house uses a scale factor of 1 over 12 . The perimeter of a square room in the doll house is 36 inches . What is the length of the full size room ?
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Sagot :

JoshEast
k= 1/12
perimeter of doll house= 36 inches
:. length of doll house= 36inches / 4
                               = 9 inches
length of actual= length of doll house x k(inverse)
:. actual lenght= 9 inches x 12/1
                     = 108 inches
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