The length of the rectangle is 9 dm, the width is 4 dm 5 mm. What is the perimeter and area of this rectangle.

1. First, we express the length and width of the rectangle in centimeters, then we get:
Length = 9 dm = 9 * 10 cm = 90 cm.
Width 4 dm 5 mm = 4 * 10 cm + 0.5 cm = 10.5 cm.
2. Now we can determine the area of the rectangle by multiplying the length by the width:
90 cm * 10.5 cm = 945 cm2.
3. Finally, we calculate the perimeter of the figure, adding twice the length and width, we get:
2 * 10.5 + 2 * 90 = 21 cm + 180 cm = 201 cm.
Answer: the perimeter of the rectangle is 201 cm, and the area of this figure is 945 cm2.