8th Class
Mathematics
Mensuration
Question Bank
Self Test-13
question_answer
A tool is made up of a cone on top of a cylinder as shown in the figure below. The cylinder has a height of 15 cm and a radius of 5 cm. The volume of the cone is 100 ncm3. If 0 is the vertex of the cone and AB is the diameter of the base of the cone and C its centre. Points 0, A, B and C are in the same plane. Calculate the lateral surface area of the tool.