Larger animals have sturdier bones than smaller animals. a mouse's skeleton is only a few percent of its body weight, compared to 16% for an elephant. to see why this must be so, recall, that the stress on the femur for a man standing on one leg is 1.4% of the bone's tensile strength. suppose we scale this man up by a factor of 10 in all dimensions, keeping the same body proportions. (assume that a 70 kg person has a femur with a cross-section area (of the compact bone) of 4.8×10−4m2, a typical value.) a. both the inside and outside diameter of the femur, the region of cortical bone, will increase by a factor of 10. what will be the new cross-section area? b) the man's body will increase by a factor of 10 in each dimension. what will be his new mass? c) if the scaled-up man now stands on one leg, what fraction of the tensile strength is the stress on the femur?