Nebuchadnezzar the king made an image of gold whose height was sixty cubits,a and its breadth six cubits.b He set it up in the plain of Dura in the province of Babylon. Bible
Approx. 90 feet (27.5 meters)
Approx. 9 feet (2.7 meters)

“an image of gold.” The statue would not have had to have been pure gold to be considered “an image of gold.” It was almost certainly overlaid with gold.

“whose height was sixty cubits, and its breadth six cubits.” Given the standard 18 inch cubit, the statue was about 90 feet (27.5 meters) high and 9 feet (2.7 meters) wide. These are not normal human proportions, so it is likely that the statue measurement included some kind of base for the human-like statue.

Commentary for: Daniel 3:1