ConceptSurface Area of a Combination of Solids

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#### Question

In Fig. 4, from the top of a solid cone of height 12 cm and base radius 6 cm, a cone of height 4 cm is removed by a plane parallel to the base. Find the total surface area of the remaining solid. (Use `pi=22/7` and `sqrt5=2.236`)

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#### Reference Material

Solution for concept: Surface Area of a Combination of Solids. For the course CBSE