Question

Parikshit makes a cuboid of plasticine of sides 5cm,2cm,5cm. How many such cuboids will he need to form a cube

Answer 1

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The volume occupied by one cuboid is 45 = 3*3*5.

Look at this as a number 45. The multiple of 45 which is a perfect cube is equal to 45*3*5*5, which is equal to 3*3*3*5*5*5.

So number of cuboids = 5*5*3 = 75.

Answer 2

here is your answer
no of cuboids will he need to form a cube =75