Arc Lengths and Sector Areas 1. Find the arc length and area of the following sectors. a) A sector of radius 6 cm and angle 60. b) A sector of radius 9 cm and angle 30" c) A sector of radius 25 cm and angle 270". Triangles: Finding the Length of a 3rd Side 2. Find the length of the missing side for the following right-angled triangles 3 cm 4 cm b) 4 cm 5 cm 6 cm 3 2 cm 5 cm Triangles: Finding Side Lengths from an Angle and a Side 3. Find the lengths x and y for the following right-angled triangles. a) 25 13 cm M 10 cm 35