Which expression can be used to find the surface area of the following square pyramid?

10
10
8
8
Choose 1
Choose 1

(Choice A)
A
100
+
40
+
40
+
40
+
40
100+40+40+40+40100, plus, 40, plus, 40, plus, 40, plus, 40

(Choice B)
B
10
+
10
+
8
+
8
+
8
+
8
10+10+8+8+8+810, plus, 10, plus, 8, plus, 8, plus, 8, plus, 8

(Choice C)
C
100
+
80
+
80
+
80
+
80
100+80+80+80+80100, plus, 80, plus, 80, plus, 80, plus, 80

(Choice D)
D
100
+
80
100+80

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.