Tom makes a cuboid of plasticine of sides 15cm, 30 cm, and 15cm.How many such cuboids will be required to form a cube?

Given that the dimensions of cuboid are 15cm, 30cm and 15cm.

L.C.M. of 15, 30 and 15 is 30.

Since 15 × 2 = 30

         30 × 1 = 30

 and   15 ×2 = 30

Hence, the number of cuboids required to form a cube = 2 × 1 × 2 = 4.

Hence, by using 4 cuboids, we can form a cube with side 30 cm each.

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Four cuboids.Putting them in a block formation will cause each side to be of 15 cm. 

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