In which shape all the faces are of same size ?

Options

A.
B.
C.
D.

Explanation

To solve the question "In which shape all the faces are of the same size?", we will analyze the given options step by step.

### Step-by-Step Solution:

1. **Identify the Shapes**: We need to consider the shapes mentioned in the question. The options are a cube, a cuboid, a cylinder, and a prism.

2. **Analyze the Cube**:
- A cube has 6 faces, and all of these faces are squares of the same size.
- Therefore, all faces of a cube are identical.

3. **Analyze the Cuboid**:
- A cuboid has 6 faces as well, but these faces can have different dimensions (length, breadth, height).
- Thus, not all faces of a cuboid are the same.

4. **Analyze the Cylinder**:
- A cylinder has two circular faces on the top and bottom, and a curved surface connecting them.
- The top and bottom faces are the same, but the curved surface is different, so not all faces are the same.

5. **Analyze the Prism**:
- A prism has two identical bases and rectangular lateral faces.
- While the bases are the same, the lateral faces are different, so not all faces are the same.

6. **Conclusion**:
- The only shape where all faces are of the same size is the cube.
- Therefore, the answer to the question is that the shape in which all faces are the same is the **cube**.

### Final Answer:
The shape in which all the faces are of the same size is a **cube**.