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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 :

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 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 :

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 :

The areas of two concentric circles forming a ring are 154 square cm and 616 square cm. The breadth of the
ring is


Answer :

7/2 cm
14 cm
7 cm
21 cm


Question :

The number of rounds that a wheel of diameter yy m will make in going 4 km is


Answer :

1500
1700
2000
2500


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


Answer :

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


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


Question :

A wheel makes 1000 revolutions in covering a distance of 0.88 km. The radius of the wheel is


Answer :

7 cm
14 cm
21 cm
28 cm