Question

If each edge of a cube is doubled, the its volume :

• A. is doubled
• B. become $4$ times
• C. become $6$ times
• D. become $8$ times

Answer 1

The correct option is D become $8$ times

let original edge of cube $=a$,

now,

new edge after doubling becomes,

new edge$=2a$

volume of new cube=${\left(edge\right)}^3$

=${\left(2a\right)}^3$

=${8\left(a\right)}^3$

thus the volume becomes $8$ times the original volume