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CBSE Notes 2011-2012 » Area Related to Circles - Class 10 Maths MCQs (Free Practice Test)

Area Related to Circles - Class 10 Maths MCQs (Free Practice Test)


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Question :

A toothed wheel of diameter 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 :

23
24
25
26


Question :

If the circumference of a circle is increased by 50 %, then
its area will be increased by


Answer :

100%
125%
150%
75%


Question :

The diameter of the wheel of a Bus is 1.4 m. The wheel
makes 10 revolutions in 5 seconds. The speed of the
vehicle (in kmph) is


Answer :

30
31
31.68
35


Question :

The area of the largest circle that can be drawn inside a square of side 14 cm in length is


Answer :

121 cm2
154 cm2
169 cm2
196 cm2


Question :

The ratio of areas of incircle and circumcircle of an
equilateral triangle is


Answer :

1:2
1:3
1:4
1:5


Question :

f the wheel of an engine of a train is 4 ,2/7m in
circumference makes seven revolution in 4 seconds, then
the speed of the train is


Answer :

25 km/hr
26 km/hr
27 km/hr
30 km/hr


Question :

If the circumference of a circle is 352 metres, then its area in square metres is


Answer :

5986 m2
6589 m2
7952 m2
9856 m2


Question :

The radius of circle is 50 cm. If the radius is decreased by 50%, its area will be decreased by


Answer :

50%
75%
80%
25%


Question :

The diameter of a wheel is 1.26 m. How far will it travel
in 500 revolutions ?


Answer :

2670 m
2880 m
1980 m
1596 m


Question :

A circular wire of radius 42 cm is cut and bent into the form of a rectangle whose sides are in the ratio of 6 : 5. The smaller side of the rectangle is


Answer :

30 cm
60 cm
70 cm
80 cm