+130511 I'm assuming that you want to know about the arc length??
Remember, in the arc length "formula," we need to convert the degrees to radians....so we have....
40 * (pi) / 180 = 2/9 pi
So we have
s = r * Θ
s = (9cm) * (2/9 * pi) And using 3.14 for pi, we have
s = (2 * 3.14)cm ≈ 6.28cm
+130511 I'm assuming that you want to know about the arc length??
Remember, in the arc length "formula," we need to convert the degrees to radians....so we have....
40 * (pi) / 180 = 2/9 pi
So we have
s = r * Θ
s = (9cm) * (2/9 * pi) And using 3.14 for pi, we have
s = (2 * 3.14)cm ≈ 6.28cm
