. A lady builds 9cm length, 10cm width,3cm height box using 1 cubic cm cubes. What is the minimum number of cubes required to build the box?

a) 730 b) 270 c) 720 d) 310

• volume of bigger cube = 9 * 10 * 3
  so total cubes = (9 * 10 * 3)/ 1
  i.e. 270
• 12 years agoHelpfull: Yes(10) No(1)
• no of cubes to make cube = 9*10*3
  = 270
  no of cubes to be removed to make hollow = 7*8*1
  = 56
  minimum no of cubes to make hollow cube = 270-56
  = 214
• 12 years agoHelpfull: Yes(10) No(4)
• volume of cube =length*breadth*height=9x10x3=270
• 12 years agoHelpfull: Yes(5) No(9)