The top diameter, bottom diameter and the height of a slump mould are ……….
Correct Answer: A. 10 cm, 20 cm, 30 cm
📚 Detailed Explanation: Slump Cone Full Dimensions
Why A (10, 20, 30 cm) is correct: The slump cone is a frustum of a right circular cone. The top (filling end) is smaller and the bottom (base) is larger. In ascending order by size: top = 10 cm → bottom = 20 cm → height = 30 cm. Options B, C, and D mix up these values incorrectly. The simple memory rule: 10–20–30 (top diameter – bottom diameter – height), each increasing by 10 cm.
Slump Cone Dimensions Summary
| Dimension | Value (cm) | Value (mm) |
|---|---|---|
| Top diameter | 10 cm | 100 mm |
| Bottom diameter | 20 cm | 200 mm |
| Height | 30 cm | 300 mm |
- Memory: 10–20–30 for top diameter, bottom diameter, height in cm.
- The cone tapers from the larger 20 cm base to the smaller 10 cm top opening.