Volume and Surface Area - Questions and Answers

11. A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The difference between the surface areas of two solids, is :

12. The surface area of a cuboid 22 cm by 12 cm by 7.5 cm, is :

13. A tank 3 m long, 2 m wide and 1.5 m deep is dug in a field 22 m long and 14 m wide. If the earth dug out is evenly spread out over the field, the rise in level of the field will be :

14. The sum of length, breadth and depth of a cuboid is 19 cm and its diagonal is 5 cm. Its surface area is :

15. If the length, breadth and the height of a cuboid are in the ratio 6 : 5 : 4 and if the total surface area is 33300 cm2, then the length, breadth and height in cms, are respectively :