Question

Parth makes a cuboid of plasticine of sides 4cm, 2cm, 4cm. How many cuboids will he need to form a cube?

Answer 1

Answer:

Given that Parikshit makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm.

Now, we have to find l.c.m. of the sides of cuboids to get the side of cube.

Then, l.c.m. of 5, 2, 5 = 10.

Therefore, each side of the cube will be 10 cm.

Now, the volume of the cuboid is = (5*2*5) cubic cm = 50 cubic cm.

and, the volume of the new cube is = (10*10*10) cubic cm = 1000 cubic cm.

Therefore, he need (1000/50) cuboids, i.e., 20 cuboids.