Q1. The length and the breadth of a rectangular table are increased by 1 m each and due to this the area of the table increased by 27 sq m But if the length is increased by 1 m and breadth decreased by 1 m area is decreased by 7 sq m Find the perimeter of the table

Q2. Three metallic spheres of radii 10 cm 8 cm and 6 cm respectively are melted to form a single solid cone of radius 12 cm Find the curved surface area of the cone correct to two places of decimal take

Q3. If the circumference of a circle is equal to the perimeter of square then which one of the following is correct

Q4. 5m radius and 12m height solid metallic cylinder is melted and recast into small spherical balls of radius 5m Find the no of cubes that can be made

Q5. A square is inscribed in a circle of diameter 2a and another square is circumscribing circle The difference between the areas of outer and inner squares is