Math Calc 1 : Circumference of circle 2 * [PI] * 23.5_radius N Math Calc 2 : Pythagoras hypotenuse SQRT(SQR(23.5_opposite) + SQR(12.7_adjacent)) N Math Calc 3 : Opposite side of triangle 9_hypotenuse * SIN([DEGREES_TO_RADIANS] * 20_degrees) N