as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
generate a valid equation that can be used to calculate the area of a circle given its radius.
user
the equation for calculating the area of a circle given its radius is a = πr², where a is the area, π is the constant pi (3.14159...) and r is the radius.
assistant