2019 · Q64
A thin rod of length 24 feet is cut into rods of equal size and joined so as to form a skeleton cube. What is the area of one of the faces of the largest cube thus constructed?
Elementary MathematicsMensuration
- A25 square feet
- B24 square feet
- C9 square feet
- D4 square feet
Explanation
A cube's skeleton has 12 equal edges, so each edge is 24/12 = 2 feet. Each face is a 2×2 square of area 4 square feet. The answer is (D).