The largest cone is formed at the base of a cube of side measuring 7 cm. Find the ratio of volume of cone to cube.

1.  20 : 21

2.  22 : 21

3.  21 : 22

4.  42: 11

5.  11 : 42

View Answer  
5
Correct Answer :

11 : 42


Explanation :
No Explanation available for this question

A spherical cannon ball, 28 cm in diameter, is melted and cast into a right circular conical mould the base of which is 35 cm in diameter. Find the height of the cone correct up to two places of decimals.

1.  8.96 cm

2.  35.84 cm

3.  5.97 cm

4.  17.92 cm

5.  None of these

View Answer  
5
Correct Answer :

35.84 cm


Explanation :
No Explanation available for this question

Find the area of the circle circumscribed about a square each side of which is 10 cm.

1.  314.28 cm3

2.  157.14 cm3

3.  150.38 cm3

4.  78.57 cm3

5.  84.12 cm3

View Answer  
5
Correct Answer :

157.14 cm3


Explanation :
No Explanation available for this question

Find the radius of the circle inscribed in a triangle whose sides are 8 cm, 15 cm and 17 cm.

1.  4 cm

2.  5 cm

3.  3 cm

4.  2√2 cm

5.  3 √2cm

View Answer  
5
Correct Answer :

3 cm


Explanation :
No Explanation available for this question

In the given diagram a rope is wound round the outside of a circular drum Whose diameter is 70 cm and a bucket is tied to the other end of the rope. Find the number of revolutions made by the drum if the bucket is raised by 11 m.

1.  10

2.  2.5

3.  5

4.  55

5.  6

View Answer  
5
Correct Answer :

5


Explanation :
No Explanation available for this question

A cube whose edge is 20 cm long has circle on each of its faces painted black. What is the total area of the unpainted surface of the cube if the circles are of the largest area possible

1.  85.71 cm2

2.  257.14 cm2

3.  514,28 cm2

4.  331.33 cm2

5.  None of these

View Answer  
5
Correct Answer :

514,28 cm2


Explanation :
No Explanation available for this question

The areas of three adjacent faces of a cuboid are x, y, z. If the volume is V, then V2 will be equal to

1.  xy/z

2.  yz/x2

3.  x2y2/z2

4.  xyz2

5.  xyz

View Answer  
5
Correct Answer :

xyz


Explanation :
No Explanation available for this question

In the adjacent figure, find the area of the shaded region. (Use = 22/7)  

1.  15.28 cm2

2.  61.14 cm2

3.  30.57 cm2

4.  40.76 cm2

5.  None of these

View Answer  
5
Correct Answer :

30.57 cm2


Explanation :
No Explanation available for this question

The diagram represents the area swept by the wiper of a car. With the dimensions given in the figure, calculate the shaded area swept by the wiper  

1.  102.67 cm

2.  205.34 cm

3.  51.33 cm

4.  208.16 cm

5.  Cannot be determined

View Answer  
5
Correct Answer :

102.67 cm


Explanation :
No Explanation available for this question

Find the area of the quadrilateral ABCD. (Given√3=1.73)  

1.  452 sq units

2.  269 sq units

3.  134.5 sq units

4.  1445 g cm

5.   Cannot be determined

View Answer  
5
Correct Answer :

269 sq units


Explanation :
No Explanation available for this question
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