At a given point within a sand deposit the major, intermediate, and minor principal stresses are 10,

Question:

At a given point within a sand deposit the major, intermediate, and minor principal stresses are 10, 6, and 4 Mn/m2, respectively. Construct the Mohr diagram, and from it scale the normal and shearing stresses and the obliquity angles on planes at 35°, 50°, 65°, and 80° from the major principal plane. (After Taylor, 1948.)?