CW VOLUME OF IRREGULAR SOLIDS online exercise for - Free Printable

Let’s go step by step through each part of the worksheet.

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Part 1: Read the volumes shown by the measuring cylinders.

(a)
Looking at cylinder (a), the scale goes from 2 to 6 cm³, with marks every 1 cm³. The water level is exactly at the 4 cm³ mark.
→ So, volume = 4 cm³

(b)
Cylinder (b) has a scale from 10 to 50 cm³, with marks every 10 cm³. The water level is at the 30 cm³ mark.
→ So, volume = 30 cm³

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Part 2: Find the volume of the irregular solids using displacement.

We use the formula:
Volume of solid = Final reading – Initial reading

(a)
Initial volume (before adding rock) = 50 cm³
Final volume (after adding rock) = 80 cm³
Volume of rock = 80 – 50 = 30 cm³

(b)
Initial volume = 50 cm³
Final volume = 70 cm³
Volume of object = 70 – 50 = 20 cm³

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Part 3: Volume of the ring using displacement method.

From the diagram:

- Initial reading (water only): The meniscus is at 60 cm³ → 60 cm³
- Final reading (water + ring): The meniscus is at 65 cm³ → 65 cm³
- Volume of ring = Final – Initial = 65 – 60 = 5 cm³

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✔ All calculations checked and verified.

Final Answer:
1(a) 4 cm³
1(b) 30 cm³
2(a) 30 cm³
2(b) 20 cm³
3. Initial reading = 60 cm³, Final reading = 65 cm³, Volume of ring = 5 cm³