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

1.   7 cm

2.  14 cm

3.  21 cm

4.  28 cm

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4
Correct Answer :

7 cm


Explanation :
No Explanation available for this question

A circular park has a path of uniform width around it. The difference between outer and inner circumference of the circular path is 132m. Its width is:

1.  20 cm

2.   21 cm

3.   22 cm

4.  24 cm

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4
Correct Answer :

21 cm


Explanation :
No Explanation available for this question

A circular swimming pool is surrounded by a concrete wall 4 ft. wide. If the area of the concrete wall surrounding the pool is 11/25 that of the pool, then the radius of the pool is:

1.   8 ft

2.  16 ft

3.  20 ft

4.  30 ft

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4
Correct Answer :

20 ft


Explanation :
No Explanation available for this question

The ratio of the outer and the inner perimeter of a circular path is 23:22. If the path is 5 meters wide, the diameter of the inner circle is:

1.   55 cm

2.  110 cm

3.  220 cm

4.  230 c

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4
Correct Answer :

220 cm


Explanation :
No Explanation available for this question

What will be the area of a semi-circle of 14m diameter

1.  22 m2

2.  77 m2

3.  154 m2

4.   308 m2

5.  None of these

View Answer  
5
Correct Answer :

77 m2


Explanation :
No Explanation available for this question

What will be the area of a semi-circle of 14m diameter

1.  22 m2

2.  77 m2

3.  154 m2

4.   308 m2

5.  None of these

View Answer  
5
Correct Answer :

77 m2


Explanation :
No Explanation available for this question

A semi-circular shaped window has diameter of 63 cm. Its perimeter equals

1.  126 cm

2.  162 cm

3.  198 cm

4.  251 cm

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4
Correct Answer :

162 cm


Explanation :
No Explanation available for this question

What will be the area of a semi-circle whose perimeter is 36cm

1.   154 cm2

2.  168 cm2

3.  308 cm2

4.  Data inadequate

5.  None of these

View Answer  
5
Correct Answer :

None of these


Explanation :
No Explanation available for this question

If a wire is bent into the shape of a square, then the area of the square is 81sq.cm. When the wire is bent into a semi-circular shape, then the area of the semi-circle will be:

1.  22 cm2

2.   44 cm2

3.  77 cm2

4.  154 cm2

View Answer  
4
Correct Answer :

77 cm2


Explanation :
No Explanation available for this question

The area of a sector of a circle of radius 5cm, formed by an arc are of length 3.5cm, is:

1.  7.5 cm2

2.   7.75 cm2

3.   8.5 cm2

4.  8.75 cm2

View Answer  
4
Correct Answer :

8.75 cm2


Explanation :
No Explanation available for this question
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