What is the volume of a sphere of radius 21 cm? (Use π = 22/7)
- A58212 cm³
- B19404 cm³
- C38808 cm³
- D29106 cm³
Show answer
Answer: (C) 38808 cm³
V = (4/3)πr³ = 38808 cm³.
Agniveer Navy Mensuration Questions with Answers & Explanations
19 Mensuration questions from the Mathematics section of Agniveer Navy, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.
The perimeter of a rectangle is 70 m and its length is 27 m. What is its area?
- A224 m²
- B216 m²
- C208 m²
- D243 m²
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Answer: (B) 216 m²
Breadth = 70/2 − 27 = 8 m; area = 27 × 8 = 216 m².
What is the circumference of a circle of radius 42 cm? (Use π = 22/7)
- A528 cm
- B271 cm
- C132 cm
- D264 cm
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Answer: (D) 264 cm
Circumference = 2πr = 2 × 22/7 × 42 = 264 cm.
What is the volume of a cylinder with radius 21 cm and height 17 cm? (Use π = 22/7)
- A23716 cm³
- B1122 cm³
- C23562 cm³
- D11781 cm³
Show answer
Answer: (C) 23562 cm³
Volume = πr²h = 22/7 × 21² × 17 = 23562 cm³.
The perimeter of a rectangle is 66 m and its length is 25 m. What is its area?
- A208 m²
- B825 m²
- C200 m²
- D192 m²
Show answer
Answer: (C) 200 m²
Breadth = 66/2 − 25 = 8 m; area = 25 × 8 = 200 m².
What is the circumference of a circle of radius 21 cm? (Use π = 22/7)
- A264 cm
- B66 cm
- C139 cm
- D132 cm
Show answer
Answer: (D) 132 cm
Circumference = 2πr = 2 × 22/7 × 21 = 132 cm.
What is the volume of a cylinder with radius 21 cm and height 2 cm? (Use π = 22/7)
- A132 cm³
- B2926 cm³
- C264 cm³
- D2772 cm³
Show answer
Answer: (D) 2772 cm³
Volume = πr²h = 22/7 × 21² × 2 = 2772 cm³.
The perimeter of a rectangle is 54 m and its length is 18 m. What is its area?
- A171 m²
- B162 m²
- C486 m²
- D180 m²
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Answer: (B) 162 m²
Breadth = 54/2 − 18 = 9 m; area = 18 × 9 = 162 m².
What is the circumference of a circle of radius 28 cm? (Use π = 22/7)
- A183 cm
- B2464 cm
- C176 cm
- D352 cm
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Answer: (C) 176 cm
Circumference = 2πr = 2 × 22/7 × 28 = 176 cm.
What is the volume of a cylinder with radius 7 cm and height 20 cm? (Use π = 22/7)
- A880 cm³
- B3234 cm³
- C3080 cm³
- D440 cm³
Show answer
Answer: (C) 3080 cm³
Volume = πr²h = 22/7 × 7² × 20 = 3080 cm³.
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Timed Mathematics test · 25 questions · instant rank
The perimeter of a rectangle is 64 m and its length is 21 m. What is its area?
- A242 m²
- B220 m²
- C252 m²
- D231 m²
Show answer
Answer: (D) 231 m²
Breadth = 64/2 − 21 = 11 m; area = 21 × 11 = 231 m².
What is the area of a circle of radius 7 cm? (Use π = 22/7)
- A176 cm²
- B44 cm²
- C154 cm²
- D77 cm²
Show answer
Answer: (C) 154 cm²
Area = πr² = 22/7 × 7 × 7 = 154 cm².
What is the volume of a sphere of radius 42 cm? (Use π = 22/7)
- A155232 cm³
- B310464 cm³
- C22176 cm³
- D232848 cm³
Show answer
Answer: (B) 310464 cm³
V = (4/3)πr³ = 310464 cm³.
What is the volume of a sphere of radius 21 cm? (Use π = 22/7)
- A29106 cm³
- B38808 cm³
- C19404 cm³
- D58212 cm³
Show answer
Answer: (B) 38808 cm³
V = (4/3)πr³ = 38808 cm³.
What is the volume of a cylinder with radius 21 cm and height 2 cm? (Use π = 22/7)
- A264 cm³
- B2772 cm³
- C1386 cm³
- D132 cm³
Show answer
Answer: (B) 2772 cm³
Volume = πr²h = 22/7 × 21² × 2 = 2772 cm³.
What is the volume of a sphere of radius 42 cm? (Use π = 22/7)
- A310464 cm³
- B232848 cm³
- C465696 cm³
- D22176 cm³
Show answer
Answer: (A) 310464 cm³
V = (4/3)πr³ = 310464 cm³.
What is the volume of a cylinder with radius 21 cm and height 20 cm? (Use π = 22/7)
- A27720 cm³
- B27874 cm³
- C2640 cm³
- D13860 cm³
Show answer
Answer: (A) 27720 cm³
Volume = πr²h = 22/7 × 21² × 20 = 27720 cm³.
The perimeter of a rectangle is 42 m and its length is 14 m. What is its area?
- A98 m²
- B112 m²
- C105 m²
- D91 m²
Show answer
Answer: (A) 98 m²
Breadth = 42/2 − 14 = 7 m; area = 14 × 7 = 98 m².
What is the area of a circle of radius 14 cm? (Use π = 22/7)
- A638 cm²
- B616 cm²
- C308 cm²
- D1232 cm²
Show answer
Answer: (B) 616 cm²
Area = πr² = 22/7 × 14 × 14 = 616 cm².
These are RankerClub practice questions written in the Agniveer Navy pattern. They are not official SSC/IBPS/RRB papers.
