Quantitative Aptitude-Area
Quantitative Aptitude-Area
41. The diameter of a wheel is 1.26 m. How many revolutions will it make in moving 44 km ?
- 2000
- 10000
- 70000
- 100000
42. A toothed wheel of dimeter 50 cm is attached to a smaller wheel of diameter 30 cm. How many revolutions will the smaller wheel make when the larger one makes 15 revolutions ?
- 18
- 20
- 25
- 30
43. A wheel makes 1000 revolutions in covering a distance of 88 km. The radius of the wheel is :
- 7 m
- 12 m
- 14 m
- 20 m
44. The diameter of the wheel of a vehicle is 1.4 m. The wheel makes 10 revolutions in 5 seconds. the speed of the vehicle ( in kmph ) is
- 29.46
- 31.68
- 32.72
- 36.25
45. If the radius of a circle is decreased by 50%, it area will decrease by : 4 km is :
- 1000
- 1500
- 1700
- 2000
46. If the radius of a circle is decreased by 50%, its area will decrease by :
- 25%
- 50%
- 75%
- None
47. If the dimete of a circle is increased by 100%, its area is increase by :
- 100%
- 200%
- 300%
- 400%
48. If the circumference of a circle is increased by 50%, then its area will be increased by :
- 50%
- 100%
- 125%
- 22.5%
49. The area of a circular field is 13.86 hectares. the cost of fencing it at the rate of 40 paise per metre is :
- Rs. 554.40
- Rs. 528
- Rs. 396
- Rs. 648
50. The ratio of the areas of the incircle and circumcircle of an equilateral triangle is :
- 1 : 2
- 1 : 3
- 1 : 4
- 1 : 9