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Q.

The length, breadth and height of the cuboid are in the ratio 1:2:3. If they are increased by 100%, 200% and 200% respectively, then, as compared to the original volume the increase in the volume of the cuboid will be:

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a

5 times    

b

18 times            

c

12 times        

d

17 times   

answer is D.

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Detailed Solution

 Given  the length breadth and height of cuboid are in the ratio 1 : 2 : 3 i.e. x, 2x and 3x They are increased by 100%, 200%, and 200% i.e. length Question Image    Question Image    = x +x     = 2x     Breadth Question Image    Question Image    Height Question Image    Question Image    Original volume l×bh =x2x3x=6x3
    Increased volume =2x6x9x=108x3
    Question Image Increase in volume     Question Image    Question Image    Question Image original volume     Answer is 17 times  
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