Question

- 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?
please solve it in a copy for better understanding.
Correct answer will be marked as brillianist answer ​

Answer 1

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

Hope it helps

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Answer 2

Answer:

20

Step-by-step explanation:

the volume of cuboid =5*2*5=50cm³

to form cubes all primes should be in pairs of 3

so in order to put them in pairs of 3

two 2's and a 5 is required

ie 2*2*5=20

50*20=1000=10³