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Ladakh Police Sub-Inspector · Mathematics · 100 practice questions with answers and explanations: 50 Easy, 50 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Find the area of a triangle with base 20 cm and height 8 cm.

  1. 70
  2. 75
  3. 85
  4. 80
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Answer: D. Area = (1/2) × 20 × 8 = 80 cm².

Sample Easy question 2

Find the circumference of a circle with radius 21 cm. (Use π = 22/7.)

  1. 130
  2. 128
  3. 126
  4. 132
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Answer: D. Circumference = 2πr = 2 × (22/7) × 21 = 132 cm.

Sample Easy question 3

Find the circumference of a circle with radius 35 cm. (Use π = 22/7.)

  1. 218
  2. 222
  3. 216
  4. 220
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Answer: D. Circumference = 2 × (22/7) × 35 = 220 cm.

Sample Medium question 4

Find the curved surface area of a cylinder with radius 14 cm and height 6 cm. (Use π = 22/7.)

  1. 532
  2. 530
  3. 526
  4. 528
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Answer: D. CSA = 2πrh = 2 × (22/7) × 14 × 6 = 528 cm².

Sample Medium question 5

Find the curved surface area of a cylinder with radius 7 cm and height 15 cm. (Use π = 22/7.)

  1. 658
  2. 660
  3. 662
  4. 664
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Answer: B. CSA = 2 × (22/7) × 7 × 15 = 660 cm².

Sample Medium question 6

Find the total surface area of a cylinder with radius 7 cm and height 10 cm. (Use π = 22/7.)

  1. 746
  2. 752
  3. 748
  4. 750
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Answer: C. TSA = 2πr(h+r) = 2 × (22/7) × 7 × 17 = 748 cm².

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