MENSURATION

If each edge of a cube is doubled, then its volume

• 4 times

• 8 times

• doubled

• remains same

 

A field is in the form of a square. The cost of ploughing the field at ₹ 4 per m2 is ₹10000. The cost of fencing the field at the rate of ₹ 6.50 is:

• 2600

• 1300

• 4200

• 4000

A box of cereals is 11.2 inch high, 7.5 inch long and 5.2 inch wide. The volume of box is

• 436.8

• 4.368

• 444

• 4000

The dimensions of a cinema hall are 100 m, 50 m and 15 m. If a person requires 150 m3 of air, then the number of persons that the cinema hall can accommodate at a particular time is

• 500

• 600

• 550

• 650

A picture, 12 inch wide and 10 inch long, is surrounded by a border of width 2 inch. Area of the border is

• 104 inches

• 48 inches

• 12 inches

• 36 inches

A godown is in the form of a cuboid of measures 60 m x 54 m x 30 m. If the volume of one box is 0.8 m3, then the number of cuboidal boxes that can be stored in the godown is

• 121500

• 12100

• 152100

• 12000

 

If the lengths of the diagonals of a rhombus are 16 cm and 30 cm respectively, then its area is

• 240

• 480

• 500

• 100

The area of a trapezium shaped field is 448 m2. If the distance between two parallel sides is 14 m and one of the parallel side is 44 m, then the other parallel sides is

• 18 m

• 20 m

• 12 m

• 10 m

The length of a room is twice its breadth. The four walls have a total area of 120 m2. If the height of the room is 4 m, then the area of the floor will be

• 50

• 100

• 2510

• 10

The capacity of a water tank of dimensions 10 m  ×  5 m ×  1.5 m is

• 75 litres

• 750 litres

• 7500 litres

• 75000 litres