2. In a triangle the length of the side opposite the angle which measures 30° is 9 cm, what is the length of the side opposite to the angle which measures 60°?
4. If a cone of radius 3.5 cm and height 9.6 cm is melted and constructed into a cylinder of the same radius, what will be the height of this cylinder? (Take ? = 22/7)
5. In a triangle the length of the side opposite the angle which measures 60° is 6?3 cm. What is the length of the side opposite to the angle which measures 90°?