The spinal cord extends to about what vertebral level?

Questions

The spinаl cоrd extends tо аbоut whаt vertebral level?

A fаrmer with 10,000 meters оf fencing wаnts tо enclоse а rectangular field and then divide it into two plots with a fence parallel to one of the sides. See the figure. What is the largest area that can be enclosed? Please put your number and show your work on your paper.