Question

The number of solid cubes of side 3 m can be cut from a solid cuboid measuring 18 m × 12 m × 9 m is .

• A. 72
• B. 36
• C. 64
• D. 81

Answer 1

The correct option is A 72

Volume of the cuboid = 18 × 12 × 9 $m^3$ .
Volume of each cube to be cut is = 3 × 3 × 3 $m^3$.
Hence number of cubes that can be cut out from the cuboid is $\frac{18\times 12\times 9}{3\times 3\times 3}$ = 72.