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Problem 8.1 Development of Surfaces of Solids

Problem 8.1 Development of Surfaces of Solids – A cone made up of Aluminium sheet with base circle diameter 65 mm and axis length 75 mm is kept on its base on the ground. A circular hole of 30 mm diameter is cut through the cone such that its axis remains perpendicular to V.P.; 10 mm to the right of the axis of cone and 25 mm above the base of cone. Develop the surface of the cone.