Zach keeps his pet chameleon Pinky in a terrarium with the dimensions shown below. There's sand in the bottom of the terrarium that reaches a height of 8 centimetres.

Zach gets a new terrarium for Pinky that is larger. The base of the new terrarium is

25 by 64 centimetres. Zach moved the existing sand to the new terrarium.

How deep will the sand be in the new terrarium?