. Parikshit 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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3
Answer:
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=50cm
3
Volume of bigger cube = 10
3
=1000cm
3
Number of cuboids required to make the bigger cube =
(Volume of a cuboid)
(Volume of cube)
=
50
1000
=20
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