User: Given this paragraph about the dimensions of a volleyball court, what is the area of one half of a volleyball court with an explanation of the math behind the calculation.
Assistant: The area of one half of a volleyball court is 81 square meters. The total area of the court is 162 square meters (9 m x 18 m). It is divided into two equal square halves of 81 square meters each (9 m x 9 m).