Question

how many cubes each of side 3 cm can be form a cuboid whose dimensions are 21 CM x 27 cm x 8 cm​

Answer 1

Volume of cubes=3×3×3 cm^3

Volume of cuboid= 21×27×8 cm^3

Number of cubes= Volume of cuboid/Volume of cubes

= 21×27×8/3×3×3 =21×27×8÷27 = 21× 8

= 168 cubes.

Answer 2

first we find the volume of cuboid

volume of cuboid is L*B*H

so

= 21*27*8

= 168*27

= 4536

Now we find the volume of 1 cube

volume of cube = side³

= (3)³

= 27

No. of cube = Volume of cuboid /volume of cube

= 4536 / 27

= 168

the number of cubes are 168

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