To find the volume of a cuboid, we multiply its three dimensions: length × width × height.
Let’s go through each shape one by one.
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Shape 1:
Dimensions: 7 cm (height), 6 cm (length), 5.5 cm (width)
Volume = 7 × 6 × 5.5
First, 7 × 6 = 42
Then, 42 × 5.5 = 42 × 5 + 42 × 0.5 = 210 + 21 =
231
→ Volume =
231 cm³
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Shape 2:
Dimensions: 8 cm (height), 9 cm (length), 12 cm (width)
Volume = 8 × 9 × 12
First, 8 × 9 = 72
Then, 72 × 12 = 72 × 10 + 72 × 2 = 720 + 144 =
864
→ Volume =
864 cm³
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Shape 3:
Dimensions: 11 cm (height), 9 cm (length), 8.5 cm (width)
Volume = 11 × 9 × 8.5
First, 11 × 9 = 99
Then, 99 × 8.5 = 99 × 8 + 99 × 0.5 = 792 + 49.5 =
841.5
→ Volume =
841.5 cm³
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Shape 4:
Dimensions: 7 cm (height), 13 cm (length), 8 cm (width)
Volume = 7 × 13 × 8
First, 7 × 13 = 91
Then, 91 × 8 = 728
→ Volume =
728 cm³
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Shape 5:
Dimensions: 15 cm (height), 9 cm (length), 11 cm (width)
Volume = 15 × 9 × 11
First, 15 × 9 = 135
Then, 135 × 11 = 135 × 10 + 135 × 1 = 1350 + 135 =
1485
→ Volume =
1485 cm³
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Shape 6:
Dimensions: 11.5 cm (height), 21 cm (length), 7 cm (width)
Volume = 11.5 × 21 × 7
First, 21 × 7 = 147
Then, 11.5 × 147
Break it down:
10 × 147 = 1470
1.5 × 147 = 220.5
Total = 1470 + 220.5 =
1690.5
→ Volume =
1690.5 cm³
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Final Answer:
1. 231 cm³
2. 864 cm³
3. 841.5 cm³
4. 728 cm³
5. 1485 cm³
6. 1690.5 cm³
Parent Tip: Review the logic above to help your child master the concept of volume cube worksheet.
