Rylee knows that the area for the face painting station is 166 square feet. she knows that the length of the rectangular area is 12 feet. how wide is the area

The width is 13 5/6 ft or 13.83 ft.

The area of a rectangle is found by multiplying the length and the width:

A=lw

Substituting the information we have, we get:
166=12w

Divide both sides by 12:
166/12 = 12w/12
13 5/6 = w

Whose mistake? can you give more details to what the question is asking?