Solution: ① The required glass area = the surface area of S uncovered glass fish tank.

S surface area =5*3+5*4*2+3*4*2.

= 15+40+24

=79 square decimeter

② Required wire length = side length (12 uncovered sides)

Wire length =(5+3+4)*4=48 decimeters.

A: It takes 79 square decimeters of glass and 48 decimeters of wires to make such a fish tank.

I hope my answer can help you, thank you ~