Leena cut small cubes of 10cm dimension each. She joined it to make a cuboid of length 100 cm, width 50 cm and depth 50 cm. How many more cubes does she need to make a perfect cube? a) 500 b) 250 c) 750 d) 650

• volume of cuboid= 100*50*50=250000cm3
  to be a cube all sides are 100
  volume of cube=100*100*100=1000000cm3
  volume required to become a cube=1000000-250000=750000cm3
  volume of each 10cm cube=10*10*10=1000cm3
  so no cubes required=750000/1000=750 cubes
• 13 years agoHelpfull: Yes(14) No(2)
• i m getting 250 cubes pls checkout
  because to prepare 100*50*50 we required 250 cubes
  means half cube is ready to build more half we required 250 cubes
• 12 years agoHelpfull: Yes(0) No(4)