Answer:
266.2
Explanation:
area of triangle = 1/2bh
Area of side A = 1/2(13)(9.4) = 61.1
Area of side B = 1/2(6)(11) = 33
Area of base C = 78
There are 2 side As and 2 side Bs
Total surface area = 2A + 2B + C = 2(61.1) + 2(33) + 78 = 266.2
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