Answer:
38x-22
Step-by-step explanation:
Start with the bottom surface area, 7x7=49
then go to the triangles, base times height divided by 2, so (7x14)/2=49
and since there are 4 triangles, multiply 49 by 4 = 196 and add the area of the bottom, which all adds up to 245





(for no. 4 check the image in the attachment)
Add a picture of the statement.