If the diameter of the base of cone is 10 cm and its height is 12 cm, then its curved surface area is 1. 60π cm 2 2. 65π cm 2 3. 90π cm 2 4. 120π cm 2

Radius of base of cone (r) = = = 5 cm. Height (h) = 12 cm. Curved surface area = πrl. Putting values we get, Curved surface area = π × 5 × 13 = 65π cm 2 . Hence, Option 2 is the correct option.