Will one roll of wire be sufficient for Maria's room?

Let's calculate the required wire length and compare it with the roll's length. The room's perimeter consists of three straight segments and a quarter-circle. The straight segments are 4 m, 4 m, and 2 m. The quarter-circle has a radius of 2 m, so its length is 1/4 of the circumference of a full circle, calculated as 2 * π * R / 4 = π * R / 2. Substituting R = 2, we get π * 2 / 2 = π meters. Adding these together, the total wire length needed is 4 + 4 + 2 + π = 10 + 3.14 = 13.14 meters. If the roll contains 10 meters of wire, it will not be sufficient. Answer: No.