Break even analysis help questions: Hello may you help me on questions 1-4 withi

Question

Break even analysis help questions: Hello may you help me on questions 1-4 within the case reading? I'm not sure if I'm doing them correctly...

Case study + the 4 questions that I have to answer: https://www.homeworkmarket.com/sites/default/files/case_6_columbia_memorial_hospotal.pdf

Here is the link that I have answered for questions 1-4, but are they correct?? http://puu.sh/lhSBn/ca6f3f28b2.png

I dont know how to do #4 and I'm not sure if 1-3 are correct. Please help me.

how do we calculate and find out questions 1-4 from the case study link I have provided?

Explanation / Answer

Here, the shear strain is , and shear stress is .

Substitute 0 for .

Write the formula for the shear strain in zx plane.

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