UPSKILL MATH PLUS

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1. If a solid cone of base radius \(r\) and height h is placed over a solid cylinder having same base radius and height as that of the cone, then the curved surface area of the shape is \(\pi r{h^2+r^2}+2 \pi r h\)
 
2. Two identical solid cubes of side a are joined end to end. Then the total surface area of the resulting cuboid is \(12a^2\).