Solved IB ACIO Question
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Q · Dice and Cubemedium · 45s
A cube of side 120 cm is painted black on all faces and cut into smaller cubes of side 20 cm each. How many smaller cubes have exactly three faces painted?
TopicDice and Cube
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.25
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Number of cubes with three faces painted = 8 (always, corner cubes).
Final Answer: Option A — 8