Capgemini
Company
Numerical Ability
Area and Volume
Q. A rectangular tank can hold k litres of water.How many litres of water can tank hold if all dimensions doubles.
Read Solution (Total 8)
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- 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
- 11 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
- 11 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
- 9 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 - 11 years agoHelpfull: Yes(1) No(1)
- if l, b, h is twice then
v=8 (l*b*h)=8k - 11 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.
- 11 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.
- 8 years agoHelpfull: Yes(0) No(0)
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