eVidyarthi

Surface Area: Combination of Solids – MCQ

1. There will be total (no. of Qs.) MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

 

1. If a right angled triangle is revolved about one of the sides containing the right angle it forms a
 
 
 
 

Question 1 of 20

2. If the radius of the base of a right circular cylinder is halved keeping the height same, then the ratio of the volume of the cylinder thus obtained to the volume of original cylinder is
 
 
 
 

Question 2 of 20

3. A right circular cylinder of radius r cm and height h cm (h>2r) just enclosed a sphere of diameter
 
 
 
 

Question 3 of 20

4. If the curved surface area of a right circular cylinder is 1760 cm2 and its radius is 10 cm, then what is its height?
 
 
 
 

Question 4 of 20

5. A toy is in the form of a cone mounted on a hemisphere of radius 3.5 cm. If the total height of the toy is 15.5 cm, then its total surface area is
 
 
 
 

Question 5 of 20

6. Total surface area of a cylinder is equal to
 
 
 
 

Question 6 of 20

7. If two identical solid cubes each of volume 64 cm3 are joined end to end, then the total surface area of the resulting cuboid is:
 
 
 
 

Question 7 of 20

8. A golf ball has diameter equal to 4.2 cm. Its surface has 200 dimples each of radius 2 mm. Assuming that the dimples are hemispherical, total surface area which is exposed to the surroundings is
 
 
 
 

Question 8 of 20

9. If H and h be the heights of two cylinders, then the ratio of curved surface areas of two cylinders with equal radii is
 
 
 
 

Question 9 of 20

10. A circular tent is cylinder to a height of 4 m and conical above it. If its diameter is 105 m and its slant height is 40 m, then the area of canvas required is
 
 
 
 

Question 10 of 20

11. There are two cones. The curved surface area of one is twice that of the other. The slant height of the latter is twice that of the former. The ratio of their radii is
 
 
 
 

Question 11 of 20

12. A toy is in the form of a cone mounted on a hemisphere of diameter 7 cm. The total height of the toy is 14.5 cm. The total surface area of the toy will be
 
 
 
 

Question 12 of 20

13. The area of the base of a cone is 616 sq. cm. If its height is 48 cm then its total surface area is:
 
 
 
 

Question 13 of 20

14. A cylindrical pencil sharpened at one edge is the combination of
 
 
 
 

Question 14 of 20

15. The total surface area of a cylinder is 165 π cm2. If the radius of its base is 5 cm, then its height is
 
 
 
 

Question 15 of 20

16. A circus tent is cylindrical to a height of 4 m and conical above it. If its diameter is 105 m and its slant height is 40 m, the total area of the canvas required is
 
 
 
 

Question 16 of 20

17. The total surface area of an open pipe of length 50 cm, external diameter 20 cm and internal diameter 6 cm will be
 
 
 
 

Question 17 of 20

18. A rocket is in the form of a circular cylinder closed at the lower end and a cone of the same radius is attached to the top. The radius of the cylinder is 2.5 m and its height is 21 m. Also, the slant height of the cone is 8 m. The total surface area of the rocket is
 
 
 
 

Question 18 of 20

19. If the radius of base of a cylinder is doubled and the height remains unchanged, its curved surface area becomes
 
 
 
 

Question 19 of 20

20. If the surface area of a sphere is 144 π cm2, then its radius is
 
 
 
 

Question 20 of 20