At the 1939 New York World’s Fair, how large were the TryIon and the Perisphere?

The symbols of the theme of the 1939 New York World’s Fair, “The World of Tomorrow,” were massive:

The Trylon, a tapering three-sided shaft, was 750 feet high; the Perisphere was a globe 200 feet in diameter.

The two objects were built at a cost of $1.7 million.