3. An are subtend an angle of 0.9 radians at the centre of the circle. If the radius of the circle is 13cm. Find the length of the are (2 marks)

To find the length of the arc, we can use the formula:Arc length = Angle (in radians) × RadiusGiven:Angle = 0.9 radiansRadius = 13 cmSubstituting the values in the formula:Arc length = 0.9 × 13Arc length = 11.7 cmTherefore, the length of the arc is 11.7 cm.