A body is bound by the xy-plane, yz-plane, xz-plane, and the highlighted (shaded) plane shown below. (The outward normal direction of the highlighted plane is also shown.) Outward normal direction of plane A stress state existing in the body is given by the following matrix with reference to the xyz- coordinates, 402 0-40 ksi. 205 The normal stress value acting on the highlighted plane is: a. 29.0 ksi b. 13.0 ksi