What is the surface area of this design? show work!

The answer is 392

Step-by-step explanation:

Divide the figure into two smaller shapes.

The area of the smaller rectangle:

4x6 + 4x6 + 4x6 + 4x4 + 4x4 = 104

Area of the bigger rectangle: (we do not count the sides that overlap between the figures as we are only finding the area of the SURFACE)

10x6 + 10x6 + 10x6 + 6x6 + 6x6 + 6x6 = 288

288 + 104 = 392

x = 25

step-by-step explanation:

a^2+b^2=c^2

7^2+24^2=c^2

49+576=625

sqrt625=25

x=25

17.08

correct me if i am wrong.