Q7: A farmer wants to build a metal fence to enclose his livestock. The fence's vertices are represented by
points A(4,-4), B(-4,-4), C(-4, 3), D(1, 3), E(1,-1), and F(4,-1). Each unit in the coordinate plane
represents 1 meter in reality. Since a gate is to be added between points A and F. the farmer will not use
metal fencing on that side. What is the total number of meters of metal fencing the farmer needs?
