What is the area of the shaded figure?

To calculate the area of the given figure, we will divide it into simple rectangles and calculate the area of each, then sum them up. Let's denote the dimensions: The left rectangle has dimensions 6 dm × 12 dm, so its area is 6 × 12 = 72 dm². The top rectangle has dimensions 8 dm × 1 dm, so its area is 8 × 1 = 8 dm². The right rectangle has dimensions 4 dm × 5 dm, so its area is 4 × 5 = 20 dm². Adding these together, the total area of the shaded figure is 72 + 8 + 20 = 100 dm².