2014 · Q82
The areas of the three adjacent faces of a cuboidal box are x, 4x and 9x square unit. What is the volume of the box?
Elementary MathematicsMensuration
- A6x² cubic unit
- B6x³ᐟ² cubic unit
- C3x³ᐟ² cubic unit
- D2x³ᐟ² cubic unit
Explanation
V² = (lb)(bh)(hl) = x·4x·9x = 36x³, so V = 6x³ᐟ² cubic units.