**1. If you have a new question please start a new thread. Otherwise nobody will see that you need some additional support.**

to Q1: The total surface of this solid consists of:

A = (surface of cube) - 2(base circles of cylinder) + (curved surface of cylinder)

Let s denote the length of the edge of the cube and r the radius of the base circle of the cylinder which have of course the height s then you get:

Plug in the known values!

to Q2: I'm very interested to learn how you got this result.

The radius of the cylinder and the sphere is r = 1.05 m, the length of the cylinder is l = 2.2 m.

The the surface area consists of the curved surface area of the cylinder and the surface of a complete sphere:

Plug in the values you already know. I've got A = 28.369 mē