To get to his office from home, Greg walks 7 blocks north and then 2 blocks east. After work he meets some friends at a cafe; to get there he walks 3 blocks south and 7 blocks west. All blocks are 660 feet long. What is the straight-line distance from the cafe to his home?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.