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": "circle_area", "description": "Computes the area of a circle given its radius.", "parameters": {"radius": {"description": "The radius of the circle.", "type": "float"}}}, {"name": "note_duration", "description": "Calculates the duration between two musical notes based on their frequencies and the tempo.", "parameters": {"freq1": {"description": "The frequency of the first note in Hz.", "type": "int", "default": 120}, "freq2": {"description": "The frequency of the second note in Hz.", "type": "int", "default": 120}, "bpm": {"description": "The tempo of the music in beats per minute. Defaults to 120.", "type": "int, optional"}}}]
I need to calculate the area of a circle with a radius of 7.5 meters and another with a radius of 10 meters. Also, find the duration between a musical note with a frequency of 440 Hz and another with a frequency of 880 Hz at a tempo of 120 BPM.
user
assistant
[{"name": "circle_area", "arguments": {"radius": 7.5}}, {"name": "circle_area", "arguments": {"radius": 10}}, {"name": "note_duration", "arguments": {"freq1": 440, "freq2": 880, "bpm": 120}}]