A community garden in the shape of a parallelogram is being planted around city hall. When the space is plotted on the coordinate plane, the vertices are at E (−0.5,0.5) , F (−9.5,−4) , G (−10.5,0) , and H (−1.5,4.5) The garden will be surrounded by recycled railroad ties. Based on the scale drawing, what is the length of ties needed?