Volume and surface area

Asked by  | 19th Feb, 2010, 06:53: PM

Expert Answer:

V = Volume of cuboid = LBH

L after 100% increase will be 2 times L.

Also, B is now, 2.5B, H is now 3.5.

{If a quantity is changed by ±X%, then the new value becomes 1±(X/100) times initial value}

V' = L'B'H'

= (2L)(2.5B)(3.5H) = 17.5LBH = 17.5V

Since the changed volume is 17.5 times the initial, 

therefore, 17.5 - 1 = 16.5, and the percentage change is 1650%




Answered by  | 20th Feb, 2010, 05:36: AM

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