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CBSE Class 9 Answered

Respected Sir/Madam,
When we double each side of cube then why does its volume becomes 8 times. Please explain..
Asked by Varsneya Srinivas | 02 Mar, 2015, 10:41: AM
answered-by-expert Expert Answer

Let the original length of the side of a cube be x cm.

Volume of the cube = x3 cm3

If each side is double, the new length becomes 2x.

Volume of the cube with new length = (2x)3= 8x3 = 8(x3) = 8(Volume of original cube)

Hence when we double the side, the Volume becomes 8 times.


Answered by Mili Hariyani | 02 Mar, 2015, 11:23: AM

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