Quantitative Aptitude-Area
Quantitative Aptitude-Area
21. The length of a rectangle is doubled while its breadth is halved. What is change in area ?
- 50% increase
- 75% increase
- 37.5% decrease
- No change
22. A hall 36 m long and 15 m broad is to be paved with stones, each measuring 6 dm by 5 dm. the number of stones required is :
- 180
- 1800
- 18
- 18000
23. A rectangular carpet has an area of 120 sq. metres and a perimeter of 46 metres. The length of its diagonal is :
- 15 m
- 16 m
- 17 m
- 20 m
24. a room 5.44 m long and 3.74 m broad is to be paved with square tiles. The least number of square tiles rquired to cover the floor is :
- 176
- 192
- 184
- 162
25. The area of a rectangle 108 m long is the same as that of a square having each side 72 m long. The width of the rectangle is :
- 36 m
- 48 m
- 42 m
- 37.3 m
26. A rectangular carpet has an area of 60 sq. m. If its diagonal and longer side together equal 5 times the shorter side, the length of the carpet is :
- 5 m
- 12 m
- 13 m
- 14.5 m
27. The number of square shaped tin sheets of side 20 cm that can be cut off from a square tin sheet of side 1 metre, is :
- 5
- 10
- 25
- 20
28. The length and breadth of a square are increased by 40% and 30% respectively. The area of the resulting rectangle exceeds thearea of the square by :
- 35%
- 42%
- 62%
- 82%
29. The cost of papering the faour walls of a room is Rs. 475. Each one of the length, breadth and height of another room is double that of this room. The cost of papering the walls of theis new room is :
- Rs. 950
- Rs. 1425
- Rs. 1900
- Rs. 712.50
30. The height of a room to it semi-perimeter is 2 : 5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per metre allowing an area of 15 sq. m. for doors and windows . The height of the room is :
- 2.6m
- 3.9m
- 4m
- 4.2m