Question
The solid shown is built from cubes of edge 3 cm. How many more such cubes are needed to build the solid into a solid of edge 12 cm by 9 cm by 9 cm?
2 m

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The solid shown is built from cubes of edge 3 cm. How many more such cubes are needed to build the solid into a solid of edge 12 cm by 9 cm by 9 cm?