The width is 4.2m and the height is 2.4m This is the size of the window. The size of the curtain is slightly larger than his, so the width is 4.5m and the height is 3m, so the area is 13.5_.

Although you didn't indicate that the unit is meters, combined with the actual situation and the data you gave, the unit can only be meters.

& gt This is a simple application of mathematics in life, and it is the topic of area operation. After mastering the algorithm, all similar problems can be solved. This is my answer to this question, I hope it will help you.