Also, another good thing about The Sphere is that it gives yet another measure of how tall the pile was at Ground Zero after the attacks. The Sphere is 25 feet tall. Compare it to the pile of damage in the surrounding area.
Math. The pile is more than 2 times the height of 25 feet. We have two towers, 95 percent air, now laying on the ground and in the BASEMENT of WTC area. Math, it is a grade school skill; learn to use it. With math you can figure out the pile spread over 19 acres, from the two acre tower foot-print would be as seen based on the energy released. Physics required. E=mgh
You are not using science.