It seems like you've uploaded images with two distinct questions. Let's address each one:

First Image: Surface Area of the Figure

The first image involves calculating the surface area of a figure, which looks like a combination of a rectangular prism and an extended shape.

1. Dimensions of the figure:

   • Length: 20 m
   • Width: 12 m
   • Height: 4 m (for the part that extends out)

   We can break the surface area calculation into parts:

   • The surface area of the long rectangular section.
   • The surface area of the smaller rectangular block attached to the long section.

To calculate the surface area of the entire figure:

• For the first rectangular prism (the long part):

  • Top and bottom faces: $2 \times (20 \times 12)$
  • Front and back faces: $2 \times (20 \times 4)$
  • Left and right faces: $2 \times (12 \times 4)$

• For the attached smaller rectangular prism:

  • Top and bottom faces: $2 \times (4 \times 12)$
  • Front and back faces: $2 \times (4 \times 4)$
  • Left and right faces: $2 \times (12 \times 4)$

Summing up these areas will give the total surface area.

Second Image: Volume of the Figure

This figure seems like an L-shaped block. To calculate the volume of such a figure, we need to consider the shape as a combination of two rectangular prisms:

• The larger section (18 mm by 7 mm by 4 mm).
• The smaller section (2 mm by 4 mm by 4 mm) that is subtracted from it.

Volume Calculation:

• Volume of the large rectangular prism = $18 \times 7 \times 4$ mm³
• Volume of the smaller rectangular prism = $2 \times 4 \times 4$ mm³

The total volume will be the difference between these two volumes: $\text{Volume} = \text{Volume of larger section} - \text{Volume of smaller section}$

Would you like further assistance with the calculations or need more details? Feel free to ask!

Here are 5 related questions:

1. How do you calculate the surface area of complex 3D shapes?
2. How can you break down the volume of composite shapes like L-shaped figures?
3. What is the difference between surface area and volume calculations for 3D objects?
4. How does the positioning of a smaller block affect the surface area of the overall figure?
5. Why is it important to subtract the volume of the cut-out section in complex shapes?

Tip: Always carefully break down complex figures into simpler shapes to make calculations easier.