Small Quiz

3

QUESTION 1

An iron pipe 20cm long has exterior diameter 25cm. If the thickness of the pipe is 1 cm, then the whole surface area of the pipe?

3168 cm^2

 

 3186 cm^2

 

3200 cm^2

 

 3150 cm^2

QUESTION 2

The radius and the height of a cone are in the ratio 4 : 3. The ratio of the curved surface area to the total surface area of the cone is:

5 : 9

 

 3 : 7

 

 5 : 4

 

16 : 9

QUESTION 3

 A solid cylinder has total surface area of 462 sq. cm. Curved surface area is 1/3rd of its total surface area. The volume of the cylinder is:

530 cm^3

 

536 cm^3

 

 539 cm^3

 

545 cm^3

QUESTION 4

QUESTION 5

A right circular cylindrical tunnel of diameter 4 m and length 10 m is to be constructed from a sheet of iron. The area(in metre square) of the iron sheet required.

280/π

 

40????

 

80????

 

None of these

QUESTION 6

QUESTION 7

The base of a right prism is a ?ABCD. If the volume of prism is 2070. Then find the lateral surface area. AB = 9, BC = 14, CD = 13, DA = 12 DAB = 90°.

 720

 

540

 

 920

 

960

QUESTION 8

Diagonal of a cube is 6√3 cm. Ratio of its total surface area and volume (numerically) is

 2 : 1

 

1 : 6

 

 1 : 1

 

 1 : 2

QUESTION 9

 A sphere and a hemisphere have the same volume. The ratio of their radii is

 1 : 2

 

 1 : 8

 

 1 : √2

 

 1 : ?2

QUESTION 10

QUESTION 11