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primary 6 | Maths
| Measurement
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Date Posted: 2 years ago
Views: 156
final total = 15*12*20 = 3600cm3
cube = 4*4*4 = 64cm3
take the difference.
cube = 4*4*4 = 64cm3
take the difference.
2nd part a bit more work.
We take the big one first.
So total surface area =
Sides =15*20 + 15*20 + 15*12 + 15*12
Top and bottom = 20*12 + 20*12
Now for the difficult part.
the little hole, can you see that there are 5 sides to this.
Bottom and 4 walls.
The bottom, this would have already been included in the big top surface already.
So all you need is 4x4 x 4walls.
We take the big one first.
So total surface area =
Sides =15*20 + 15*20 + 15*12 + 15*12
Top and bottom = 20*12 + 20*12
Now for the difficult part.
the little hole, can you see that there are 5 sides to this.
Bottom and 4 walls.
The bottom, this would have already been included in the big top surface already.
So all you need is 4x4 x 4walls.
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Date Posted:
2 years ago
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