Answer:
Lets find the cylinder's:
6 is the diameter so half of that is 3
3^2 = 9
9 x 3.14 = 28.26
28.26 x 2 = 56.52
Lets find the circumference then multiply by the height to get the round surface.
3 x 2 x 3.14 = 18.84 x 10 = 188.4
56.52 + 188.4 = 244.92 <--- surface area of cylinder
Now the surface area of the cube:
20 x 18 = 360
360 x 2 = 720
16 x 18 = 288
288 x 2 = 576
16 x 20 = 320
320 x 2 = 640
720 + 576 + 640 = 1,936 <------- surface area of the cube
Now lets add both surface areas!:
244.92 + 1,936 = 2,180.92 m2 is your answer.