Area Questions and Answers
Practice ModeShowing 10 of 80 questions
Q41
The diameter of a wheel is 1.26 m. How many revolutions will it make in moving 44 km ?
Answer: Option D
Q42
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 ?
Answer: Option C
Q43
A wheel makes 1000 revolutions in covering a distance of 88 km. The radius of the wheel is :
Answer: Option C
Q44
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
Answer: Option B
Q45
If the radius of a circle is decreased by 50%, it area will decrease by : 4 km is :
Answer: Option D
Q46
If the radius of a circle is decreased by 50%, its area will decrease by :
Answer: Option C
Q47
If the dimete of a circle is increased by 100%, its area is increase by :
Answer: Option C
Q48
If the circumference of a circle is increased by 50%, then its area will be increased by :
Answer: Option B
Q49
The area of a circular field is 13.86 hectares. the cost of fencing it at the rate of 40 paise per metre is :
Answer: Option A
Q50
The ratio of the areas of the incircle and circumcircle of an equilateral triangle is :
Answer: Option C