The largest Young's modulus measured for any biological material is 30.0 GPa , for the S-layer of cell walls. Suppose that in the future we are able to use this material to construct an artificial Achilles tendon (see previous problem) for an athlete who has damaged his. The artificial Achilles tendon should be just as long as the original one so that it can connect at the proper places. (According to one set of experiments, the average area of the Achilles tendon is 78.1mm^2 , its average length is 26.0cm , and its average Young’s modulus is 1474MPa .) If the artificial tendon has a circular

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