how can we find the radius of a circle if we know three points that lie on it. let those points be (a,b), (c,d), (e,f). Please teach me how to do these types of questions.

Thank you

Write the basic euation of circle.
As the circle is pasing through the given points, so put these coordinates value i place of variable terms, x and y.
or use this equations and find the solution.
a(x – x₁) + b(y – y₁) = 0
Put the value of x and y and calculate the answer...