2023 · Q87
The volume of a cuboid is 3600 cubic cm. The areas of two adjacent faces are 225 square cm and 144 square cm. What is the area of the other adjacent face?
Elementary MathematicsMensuration
- A400 square cm
- B360 square cm
- C320 square cm
- D300 square cm
Explanation
For a cuboid, (lb)(bh)(hl) = V². Hence 225 × 144 × (hl) = 3600², giving hl = 12960000/32400 = 400 square cm (A).