Question

7. If each edge of a cube is doubled,
(1) how many times will its surface area increase?
(ii) how many times will its volume increase?
2​

Answer 1

Answer:

1) it surface area increased a doubled because it's edge is increase

2) it volume is also increase into its doubled

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Surface area of cube=6a2

Is sides of cube is doubled 

New surface area is =6×4a2

Divide 2 by 1

=24a2surfaceareaofcube1surfaceareaofcube2=6a224a2=4times

Surface area increased four times 

Volume of cube= a3 

Volume of new cube= (2a)3

=8a3

Divide 2 by 1

volumeofcubevolumeofnewcube=a38a3

Volume increased 8 times