Smita was making a cube with dimensions 5*5*5 using 1*1*1 cubes. What is the number of cubes needed to make a hollow cube looking of the same shape?
a) 98 b) 104 c) 100 d) 61

• first are so (5*5*5)=125
  then to make hollow cube v muz take out the outr most cubes so 5-2 and 5-2 and 5-2
  so 125-[(5-2)*(5-2)*(5-2)] =98 thats the answer...
• 14 years agoHelpfull: Yes(120) No(5)
• Total volume=5^3=125
  For making it hollow it required to remove 27 cube because of 3^3=27
  Total cube remain=125-27=98
• 14 years agoHelpfull: Yes(27) No(2)
• [{5*5*5}-{(5-1)*(5-1)*(5-1)}]
  =61.
• 14 years agoHelpfull: Yes(21) No(65)
• 98.....
• 14 years agoHelpfull: Yes(20) No(7)
• 1st time no cube: 5*5*5=125
  reduced amount of volume=(5-2)*(5-2)*(5-2)=27
  so d ans is 125-27=98
• 14 years agoHelpfull: Yes(18) No(3)
• 98
• 14 years agoHelpfull: Yes(14) No(5)
• my dear frnd write the complete solution
• 14 years agoHelpfull: Yes(7) No(4)
• when u guys find the hollow cube then why subtracting 2? pls tell
  
• 9 years agoHelpfull: Yes(2) No(0)
• (5*5*5)-(5-2)*(5-2)*(5-2)=98
• 12 years agoHelpfull: Yes(0) No(1)
• 98
  5*5*5=125
  125-3*3*3=98
• 9 years agoHelpfull: Yes(0) No(0)