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Calculating compressive stress watch

1. Hi, question I'm having trouble with is:

A punch with a diameter d = 38mm is used to punch a hole in a 6 mm thick steel
plate. A force 116 kN is required.
What is the average compressive stress (MPa) in the punch?
Required accuracy is 0.1 MPa.

Do I have to consider the thickness of the steel? if so, how?

EDIT: Also how would I calculate the average sheer stress in the punch?
2. For compressive stress, no need to consider the thickness of the steel. Calculate the stress as per usual.

For shear stress, what do you think the shear area would be?
3. (Original post by Smack)
For compressive stress, no need to consider the thickness of the steel. Calculate the stress as per usual.

For shear stress, what do you think the shear area would be?
The circumference of the punch hole multiplied by the thickness of the steel?

Thanks
4. (Original post by Sljmaster)
The circumference of the punch hole multiplied by the thickness of the steel?

Thanks
Yes.

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