Question

The question is there

Answer 1

3 cm

Explanation:

Set up an equation that solves for the surface area, "112
`cm^(2)`" :

10(2)+10(2)+2x+2x+10x+10x = 112

20+20+4x+20x = 112

24x+40=112

24x=72

x=3

So, 3 cm.