Final answer:
The length of Kresha's room is 5 meters.
Step-by-step explanation:
To find the length of Kresha's room, we can use the formula for the area of a rectangle: Area = Length x Width. In this case, the width is given as 11 meters and the area is given as 55 square meters. So, we can substitute these values into the formula:
55 = Length x 11
To solve for the length, we divide both sides of the equation by 11:
Length = 55 / 11
Calculating the division, we find:
Length = 5 meters