A thin-walled pressure vessel is subjected to internal pressure such that a hoop stress of 100 MPa develops. Imagine that the vessel is made of an orthotropic (has at least 2 orthogonal planes of symmetry, where material properties are independent of direction within each plane) continuous fiber composite with most of the fibers running around the circumference. The elastic constants for this material are given below, with direction 3 around the circumference, direction 2 along the length, and direction 1 through the thickness. What is the strain in the hoop direction