Perimetro y Area circunferencia

Radio_{1} = 8 (slider from 1 to 10, step 1)
Centro = (0, 0)
c = Circle(Centro, Radio_{1})
P: (2 * Radio_{1})
b: (Radio_{1} * Radio_{1})
Pointc_{1} = PointIn(c)
Pointc = PointIn(c)
text1: "Perimetro = " + (LaTeX[P]) + " π "
text2: "Radio = " + (LaTeX[Radio_{1}]) + ""
Textc: "Area =" + (LaTeX[b]) + "π "
A = Point(c)
Radio = Segment(Centro, A)