Q. A rectangular tank can hold k litres of water.How many litres of water can tank hold if all dimensions doubles.

• let dimensions of tank are x*y*z=xyz
  so xyz can hold k litres of water
  now dimensions are doubled i.e 2x*2y*2z=8xyz
  as xyz holds k litres,so 8xyz will hold 8*k=8k litres of water
  ans 8k litrs
  
• 10 years agoHelpfull: Yes(68) No(6)
• so given that it is a rectangular tank..let l,b,h be the length breadth and heigt respectvily..so the volume in cubic metre is l*b*h..=k litres.so when dimension become double length becomes 2*l ,breadth becomes 2*b and height becomes 2*h. then volume=2l*2b*2*h=8*lbh=8*k litres. therefore the tank can hold 8k litres of water
• 10 years agoHelpfull: Yes(3) No(1)
• area of the rectangle is l*b not l*b*h...so our solution is 2l*2b=4lb-->4K litres ans
• 8 years agoHelpfull: Yes(2) No(1)
• this can be solved with an eg,
  suppose k = 8. so the tank dimensions are 2*2*2.
  now double the dimensions and form the tank : 4*4*4 =64
  64 is 8 times 8 so answer is 8k
• 10 years agoHelpfull: Yes(1) No(1)
• if l, b, h is twice then
  v=8 (l*b*h)=8k
• 10 years agoHelpfull: Yes(1) No(1)
• if the dimension is lets say a,b,c. then the volume of the tank will be a*b*c=k. if the dimensions get doubled then now the dimension is 2*a,2*b,2*c. so new volume will be (2*a*2*b*2*c)=8*k. So the new volume will be 8 times than the previous one.
• 10 years agoHelpfull: Yes(1) No(0)
• the rectangular tank here is a cuboid. the volume of cuboid= l*b*h
  since l*b*h can hold k lit, 2(l*b*h) can hold 8k lit.
• 10 years agoHelpfull: Yes(0) No(2)
• here the tank is rectangular so we can only increased the the two elements length and width hence solution willl be
  l*b*h=k
  after incresed
  2l*2b*h=4k
  hence 4k is right answer.
  
• 7 years agoHelpfull: Yes(0) No(0)