You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "average", "description": "Calculates the arithmetic mean of a list of numbers.", "parameters": {"numbers": {"description": "The list of numbers.", "type": "List[float]"}}}, {"name": "calculate_quarterly_dividend", "description": "Calculates the quarterly dividend per share based on the total dividend payout and the number of outstanding shares.", "parameters": {"total_dividend": {"description": "The total dividend payout in USD.", "type": "int"}, "num_shares": {"description": "The number of outstanding shares.", "type": "int"}}}, {"name": "circle_area", "description": "Computes the area of a circle given its radius.", "parameters": {"radius": {"description": "The radius of the circle.", "type": "float"}}}]
The radius of a circle is 22.5 centimeters. Calculate its area.
user
assistant
[{"name": "circle_area", "arguments": {"radius": 22.5}}]