The length, breadth, and height of a cube are incresed by 10%, 10%, and 20% respectively. The change in the volume of the resultant cuboid is(nearly)_________
a) 40% b) 55% c) 45% d) 50%

• c) 45%
  
  Let the initial length=10, breadth=10 and height=10 units, so volume=10x10x10=1000 unit².
  When length, breadth, and height of a cube are increased by 10%, 10%, and 20% respectively, then New lenght=11, breadth=11 and height=12 units, so volume=11x11x12=1452 unit².
  Hence % change in volume=(1452 - 1000)x100/1000 = 45.2 ~ 45
• 7 years agoHelpfull: Yes(2) No(2)