Answer:
114
Explanation:
17 + 8 = 25
25 ÷ 2 is for one triangle.
25 ÷ 2 = 12.5
12.5 x 4 = 50
(4, because there are 4 triangles)
Then, 8 x 8 is for the middle square, which is 64
64 + 50 = 114
So, The surface area is 114
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