Rajaram makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm. How many such cuboids will he need
to form a cube?
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L.C.M. of 5 and 2 gives the dimension of the cube to be formed.
L.C.M. of 5 and 2 is 10.
Volume of cuboid =5×5×2=50 cubic cm
Volume of bigger cube = 10*3
=1000cm *3
Number of cuboids required to make the bigger cube =
(Volume of a cube)/
(Volume of cuboid)
=50/1000
=20 is a answer
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