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15 Geometry basics Questions and Answers

15 solved Geometry basics questions with step-by-step explanations. Includes formulas, shortcuts, and tips for placement tests and competitive exams.

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Practice geometry basics questions with detailed explanations. These solved examples cover the most frequently asked patterns in placement and competitive exams.

Q1 Easy

Find perimeter of a rectangle with length 12 cm and breadth 10 cm.

  • A. 50
  • B. 38
  • C. 34
  • D. 44 ✓
Explanation: Perimeter = 2(l+b) = 2(12+10) = 44 cm.
Q2 Easy

Find area of a triangle with base 19 cm and height 18 cm.

  • A. 163
  • B. 175
  • C. 171 ✓
  • D. 167
Explanation: Area = 1/2 x base x height = 1/2 x 19 x 18 = 171 sq cm.
Q3 Easy

Find perimeter of a rectangle with length 17 cm and breadth 8 cm.

  • A. 40
  • B. 44
  • C. 50 ✓
  • D. 56
Explanation: Perimeter = 2(l+b) = 2(17+8) = 50 cm.
Q4 Easy

Find area of a triangle with base 8 cm and height 6 cm.

  • A. 16
  • B. 20
  • C. 28
  • D. 24 ✓
Explanation: Area = 1/2 x base x height = 1/2 x 8 x 6 = 24 sq cm.
Q5 Easy

Find perimeter of a rectangle with length 9 cm and breadth 10 cm.

  • A. 44
  • B. 32
  • C. 38 ✓
  • D. 28
Explanation: Perimeter = 2(l+b) = 2(9+10) = 38 cm.
Q6 Easy

Find area of a rectangle with length 19 cm and breadth 5 cm.

  • A. 101
  • B. 83
  • C. 95 ✓
  • D. 89
Explanation: Area = l x b = 19 x 5 = 95 sq cm.
Q7 Medium

Find area of a triangle with base 14 cm and height 17 cm.

  • A. 115
  • B. 111
  • C. 123
  • D. 119 ✓
Explanation: Area = 1/2 x base x height = 1/2 x 14 x 17 = 119 sq cm.
Q8 Medium

Find area of a rectangle with length 21 cm and breadth 14 cm.

  • A. 294 ✓
  • B. 282
  • C. 288
  • D. 300
Explanation: Area = l x b = 21 x 14 = 294 sq cm.
Q9 Medium

Find area of a triangle with base 8 cm and height 11 cm.

  • A. 44 ✓
  • B. 48
  • C. 40
  • D. 36
Explanation: Area = 1/2 x base x height = 1/2 x 8 x 11 = 44 sq cm.
Q10 Medium

Find perimeter of a rectangle with length 13 cm and breadth 14 cm.

  • A. 60
  • B. 44
  • C. 48
  • D. 54 ✓
Explanation: Perimeter = 2(l+b) = 2(13+14) = 54 cm.
Q11 Medium

Find area of a triangle with base 13 cm and height 18 cm.

  • A. 121
  • B. 113
  • C. 109
  • D. 117 ✓
Explanation: Area = 1/2 x base x height = 1/2 x 13 x 18 = 117 sq cm.
Q12 Hard

Find perimeter of a rectangle with length 20 cm and breadth 16 cm.

  • A. 62
  • B. 72 ✓
  • C. 66
  • D. 78
Explanation: Perimeter = 2(l+b) = 2(20+16) = 72 cm.
Q13 Hard

Find area of a rectangle with length 21 cm and breadth 5 cm.

  • A. 99
  • B. 93
  • C. 111
  • D. 105 ✓
Explanation: Area = l x b = 21 x 5 = 105 sq cm.
Q14 Hard

Find perimeter of a rectangle with length 12 cm and breadth 16 cm.

  • A. 62
  • B. 50
  • C. 46
  • D. 56 ✓
Explanation: Perimeter = 2(l+b) = 2(12+16) = 56 cm.
Q15 Hard

Find area of a rectangle with length 16 cm and breadth 8 cm.

  • A. 122
  • B. 134
  • C. 116
  • D. 128 ✓
Explanation: Area = l x b = 16 x 8 = 128 sq cm.

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