The solid below is made up of 1-cm cubes.
How many more 1-cm cubes are needed to build a cube of edge 4 cm?

Mixed operations with integers中文
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Worked solution

11

1. Calculate the total number of 1-cm cubes needed to form a cube of edge 4 cm

Total cubes needed =4×4×4=64= 4 \times 4 \times 4 = 64

2. Find the number of additional cubes required

Additional cubes needed =64−15=49= 64 - 15 = 49

Answer

4949 (option 3)

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