Answer:
They have different surface
Step-by-step explanation:
Hi, apart from the fact that they have different shapes, they have another difference:
Even having the same mass and volume, the surface of two objects can be different
In an estimation:
Piece 1 (cube):

Piece 2 (plate)


This piece isn't perfectly rectangular but this gives you an idea of the difference of surfaces. Also, we didn't add the little surface of the sides.