Question

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




please answer very fast .

Answer 1

hey!!!

A cube is a shape with 12 edges.

Old surface area:
Surface Area of cube= 6a²
= 6×12×12
= 864cm²

New surface area
= 6×24×24
= 3456

Difference in surface area= 3456-864
= 2592cm²

Old volume:
Volume of a cube= a³
= 12×12×12
= 1728cm³

New volume:
Volume of a cube=a³
= 24×24×24
= 13824

Difference in volume= 13824-1728
= 12096cm³

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