Respuesta :

Answer:

Cube with length 4cm.

Explanation:

The surface area of cube is 6a^2.

For cube with length 3

A= 6a^2

A= 6 ×(3×3)

=6(9)

= 54cm

For cube b.

A=6(a^2)

= 6×(4×4)

6(16)

= 96cm