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CBSE Class 8 Answered

the sides of a cube are doubled.find the ratio between the volume of the first cube and the new cube
Asked by ajayrath7 | 22 Jul, 2017, 10:57: AM
answered-by-expert Expert Answer
begin mathsize 16px style Let space the space side space of space 1 st space cube equals straight a rightwards double arrow Volume space of space 1 st space cube equals straight a cubed Now comma space the space side space of space 2 nd space cube space is space doubled. rightwards double arrow Side space of space 2 nd space cube equals 2 straight a rightwards double arrow Volume space of space 2 nd space cube equals left parenthesis 2 straight a right parenthesis cubed equals 8 straight a cubed Hence comma space ratio space is space given space by fraction numerator Volume space of space 1 st space cube over denominator Volume space of space 2 nd space cube end fraction equals fraction numerator straight a cubed over denominator 8 straight a cubed end fraction equals 1 over 8 equals 1 colon 8 end style
Answered by Rashmi Khot | 22 Jul, 2017, 09:35: PM

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