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The image shows that Adrian has cut several round paper plates into two equal parts, forming semicircles. The question asks for the diameter of a single paper plate based on the measurements provided in the image.

The image provides the following details:
- The vertical distances between the flat sides of the semicircles are 6 cm, 8 cm, and 6 cm.
- On both ends, the length from the flat part to the curved outer edge is 11 cm.

### Understanding the Diagram:
- Each semicircle has its flat side aligned vertically.
- The diameter of a paper plate would consist of the total height of each semicircle (11 cm), which is equal to the radius of the paper plate.
- Since the flat side of each semicircle touches the next, the distance between them must be subtracted from the full diameter.
  
### Calculation:

The height given from the flat side to the curved part is 11 cm, which is the **radius** of the paper plate. The full **diameter** of the paper plate is twice the radius:

\[
\text{Diameter} = 2 \times 11 \, \text{cm} = 22 \, \text{cm}
\]

Therefore, the diameter of a single paper plate is **22 cm**.

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Would you like a deeper explanation, or do you have any further questions? Here are some related questions for you:

1. How do we know that the flat side of the semicircles forms the diameter?
2. What is the relationship between the radius and the diameter of a circle?
3. How can you calculate the circumference of the original circular paper plate?
4. How would the solution change if the given measurement was the diameter instead of the radius?
5. Can you think of a scenario where cutting circles in this way might be useful?

**Tip:** Always remember that the diameter of a circle is twice the length of the radius!

Adrian telah memotong beberapa pinggan kertas berbentuk bulatan kepada dua bahagian yang sama besar menjadi semibulatan. Berapakah diameter bagi sekeping pinggan kertas itu?

Find out how to calculate the diameter of a paper plate based on the given radius in the image. This problem covers basic geometry, including circle theorems, and is suitable for students in Grades 6-8.

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