Step-by-step explanation:
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Answer:
10. 85°
11. 70°
12. 50°
Step-by-step explanation:
Please see attached picture for full solution.
Answer:
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Step-by-step explanation:
The surface area of the triangular prism consist of area of two rectangles 11 m by 17 m, one rectangle 11 m by 16 m and area of two triangles.



The surface area is

I would assume that the angle of f equals 50°... sincesince the triangles are similar that means that the angles are most likely equal to each other. since the big triangle you can do it 90 + 40 which equals 130 then 180, since that is the total degrees in a triangle, minus 130 equals 50 this means 50 ° is the angle of c. keep in mind angle c equals angle f.