Find the surface area of the figure below.

Could someone with number 1 and 2

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)