Mensuration-Sample Questions

1.   The length, breadth and height of a cuboid are 20 cm, 15 cm, 10 cm respectively. Find its total surface area.

2.   In a building there are 24 cylindrical pillars with each having a radius 28 cm and height 4 m. Find the cost of painting the curved surface area of all pillars at the rate of Rs. 8 per meter square.

3.   Find the height of cylinder whose radius is 7 cm and total surface area is 968 cm².

4.   A box is in the form of cuboid of dimensions (80*30*40) cm. The base the side faces and back faces are to be covered with a coloured paper. Find the area of paper needed.

5.   The lateral surface area of a hollow cylinder is 4224 cm². It is cut along its height and formed a rectangular sheet of width 33 cm. find the perimeter of rectangular sheet.

6.   A roller takes 750 complete revolutions to move once over a level of road. Find the area of road if the diameter of the roller is 84 cm and length is 1 m.