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The problem in the image asks to calculate the pressure exerted by a block in three different orientations based on its dimensions and weight. Here's a breakdown:

- Dimensions of the block:
  - Length (P) = 12 cm
  - Width (L) = 8 cm
  - Height (t) = 3 cm
- Weight of the block = 20 N

The three positions shown in the image (labeled as a, b, and c) correspond to the block resting on different faces.

### Pressure Formula:
Pressure (\( P \)) is given by the formula:

\[
P = \frac{F}{A}
\]

Where:
- \( F \) is the force (in this case, the weight of the block, which is 20 N),
- \( A \) is the area of the face on which the block is resting.

### Calculations for Each Position:
1. **Position a**: The block is resting on the face with dimensions \( P \times L \).
   - Area \( A_a = P \times L = 12 \, \text{cm} \times 8 \, \text{cm} = 96 \, \text{cm}^2 \)
   - Pressure \( P_a = \frac{20 \, \text{N}}{96 \, \text{cm}^2} = 0.208 \, \text{N/cm}^2 \)

2. **Position b**: The block is resting on the face with dimensions \( L \times t \).
   - Area \( A_b = L \times t = 8 \, \text{cm} \times 3 \, \text{cm} = 24 \, \text{cm}^2 \)
   - Pressure \( P_b = \frac{20 \, \text{N}}{24 \, \text{cm}^2} = 0.833 \, \text{N/cm}^2 \)

3. **Position c**: The block is resting on the face with dimensions \( P \times t \).
   - Area \( A_c = P \times t = 12 \, \text{cm} \times 3 \, \text{cm} = 36 \, \text{cm}^2 \)
   - Pressure \( P_c = \frac{20 \, \text{N}}{36 \, \text{cm}^2} = 0.556 \, \text{N/cm}^2 \)

### Summary of Pressures:
- Pressure in position a: \( 0.208 \, \text{N/cm}^2 \)
- Pressure in position b: \( 0.833 \, \text{N/cm}^2 \)
- Pressure in position c: \( 0.556 \, \text{N/cm}^2 \)

Let me know if you need more details or clarifications.

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Here are 5 related questions you might want to explore:
1. How does the weight of an object affect the pressure exerted on a surface?
2. What would happen to the pressure if the block's weight were doubled?
3. How does changing the dimensions of the block affect the pressure on each face?
4. Can you calculate the pressure in SI units (Pa) instead of N/cm²?
5. How would the pressure change if the block were placed on an inclined plane?

**Tip**: Always ensure to match units in physics calculations to avoid inconsistencies.

Sebuah balok memiliki panjang (P) 12 cm, lebar (l) 8 cm, dan tinggi (t) 3 cm serta berat sebesar 20 N. Jika balok tersebut diletakkan dengan posisi seperti gambar a, b, dan c, tentukan besar tekanan pada masing-masing posisi tersebut!

Learn how to calculate the pressure exerted by a block with dimensions 12 cm x 8 cm x 3 cm and a weight of 20 N in different positions. This physics problem covers the formula for pressure and provides solutions for three different orientations of the block.

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