Question: ( Problem 6 - 6 4 ) Determine the dimension a of a beam having a square cross section in terms of the radius r

(Problem 6-64) Determine the dimension a of a beam having a square cross section in terms of the radius r of a beam with a circular cross section if both beams are subjected to the same internal moment which results in the same maximum bending stress.
( Problem 6 - 6 4 ) Determine the dimension a of

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