Mensuration (Part-5)

Total Questions: 50

11. A hemisphere has a radius of 6.2 cm. Find its total surface area (use π = 3.14) (round off to two decimal places). [SSC CHSL 02/07/2024 (2nd Shift)]

Correct Answer: (d) 362.10 cm²
Solution:

12. If the side of a square is increased by 5%, then the percentage increase in its area will be: [SSC CHSL 02/07/2024 (2nd Shift)]

Correct Answer: (b) 10.25%
Solution:

13. If the brick size is 25 cm x 12 cm x 9 cm, then how many bricks are required to construct a wall of length 10 m, breadth 22.5 cm and height 6 m ? [SSC CHSL 02/07/2024 (2nd Shift)]

Correct Answer: (d) 5000
Solution:

14. An iron box with external dimensions 60 cm, 40 cm, and 20 cm is made of 1 cm thick sheet. If 1 cm³ of iron weighs 50 gm, the weight of the empty box is: [SSC CHSL 02/07/2024 (3rd Shift)]

Correct Answer: (a) 416.40 kg
Solution:

15. If the diameter of a hemisphere is 42 cm, then the volume of hemisphere (in cm³) is: Take π = 22/7 [SSC CHSL 02/07/2024 (3rd Shift)]

Correct Answer: (d) 19404
Solution:

16. Find the difference between the curved surface area and total surface area of a right circular cylinder having a length of 68 cm and base diameter of 28 cm. [SSC CHSL 02/07/2024 (3rd Shift)]

Correct Answer: (d) 1232 cm²
Solution:

17. The perimeter of a triangle is 36 units. Its area cannot be more than_______square units. [SSC CHSL 02/07/2024 (3rd Shift)]

Correct Answer: (c) 36√3
Solution:

18. The outer surface of a sphere having diameter 10 m is painted at the rate of ₹ 80/π per m². What is the cost of painting? [SSC CHSL 02/07/2024 (4th Shift)]

Correct Answer: (a) ₹8,000
Solution:

19. The triangle has sides 3 cm, 4 cm and 5 cm. What is the length of the perpendicular from the opposite vertex to the side whose length is 5 cm? [SSC CHSL 02/07/2024 (4th Shift)]

Correct Answer: (b) 2.4 cm
Solution:

20. The radius and height of a cylinder are in the ratio 6:7 and its volume is 792 cm³. Calculate its curved surface area in cm² [SSC CHSL 02/07/2024 (4th Shift)]

Correct Answer: (c) 264
Solution: