Question

2. If each side of a cube is doubled then its volume
a) is doubled
b)becomes 4 times
c) becomes 6 times
d)becomes 8 times
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Answer 1

Answer:

let original edge of cube =a,

now,

new edge after doubling becomes,

new edge=2a

volume of new cube=(edge)^3

=(2a)^3

=8(a)^3

thus the volume becomes 8 times the original volume.