13. Find the Total Energy absorbed by the bones of both legs at the point of compressive fracture if: The average area (A) of a bone is 7 x 10-4 m, the combined length of the leg bones (1) is 0.85 m, the breaking stress of the bone (SB) is 108 Pa, and the Young's modulus (Y) for the bone is 1.4 x 1010 Pa. Show your work. 1 Pa = 1 N/m