Question

John makes a cuboid of plasticine, of sides 5cm, 4cm, 2cm. How many
such cuboids will be needed to form a cube.​

Answer 1

Answer:

200 cuboids

Step-by-step explanation:

given that john makes a cuboid of plasticine of side 5cm,4cm,2cm.

lcm of the sides of cuboid = side of the cube

lcm of the sides of cuboid i.e. 5,4,2 = 20cm

No. of cuboids required = volume of cube/volume of a cuboid

                                        = side*side*side/length*breadth*height

                                        = 20*20*20/5*4*2

                                        = 8000/40

                                        = 200 cuboids

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