Question

if each edge of a cube is doubled how many times will its surface area increased

Answer 1

Answer : It's surface area is increased by 4 times.

Solution :

Let the edge of cube be x at starting.

So, Surface area = 6 a² = 6 x² .

Each edge of cube is doubled.

Edge of the cube = 2x.

Surface area = 6 ( 2x) ² = 24x²

Therefore, Surface area increased by 4 times when edge is doubled.

Answer 2

Please see the attachment