Question 820284
Area is in square feet.  The formula is length * width.<P>
Your daughter's answer, a square room with sides = 7 (7 * 7 = 49) is correct.<P>
The room could be 5 by 9.8.  5*9.8 = 49.  But it's odd for rooms to have such measurements.<P>
Most geometry is simple when you know the formulas.