Mensuration

What you'll learn

A clear guide to 2D area and perimeter and 3D volume and surface-area formulas — squares, circles, cuboids, cylinders, cones and spheres — for SSC-CGL.

This chapter has

Mensuration — solved practice questions

8 SSC / Banking Quantitative Aptitude questions with step-by-step solutions. Attempt each, then reveal the answer.

1. Q1easy

   The area of a rectangle with length 8 cm and breadth 5 cm is:

   • A26 cm²
   • B40 cm²
   • C13 cm²
   • D80 cm²
   Show answer & solution

   Correct answer: (B) 40 cm²

   Area = l × b = 8 × 5 = 40 cm².

2. Q2easy

   The perimeter of a square with side 7 cm is:

   • A49 cm
   • B28 cm
   • C14 cm
   • D56 cm
   Show answer & solution

   Correct answer: (B) 28 cm

   Perimeter = 4s = 4×7 = 28 cm.

3. Q3easy

   The area of a triangle with base 10 cm and height 6 cm is:

   • A30 cm²
   • B60 cm²
   • C15 cm²
   • D20 cm²
   Show answer & solution

   Correct answer: (A) 30 cm²

   Area = ½ × base × height = ½ × 10 × 6 = 30 cm².

4. Q4medium

   The area of an equilateral triangle with side a is:

   • Aa²/2
   • B(√3/4)a²
   • C(√3/2)a
   • Da³
   Show answer & solution

   Correct answer: (B) (√3/4)a²

   Area = (√3/4)a².

5. Q5easy

   Area of a circle with radius 7 cm (π=22/7):

   • A44 cm²
   • B88 cm²
   • C154 cm²
   • D308 cm²
   Show answer & solution

   Correct answer: (C) 154 cm²

   Area = πr² = (22/7)×49 = 154 cm².

6. Q6medium

   The diagonal of a square with side 5 cm is:

   • A5 cm
   • B5√2 cm
   • C10 cm
   • D25 cm
   Show answer & solution

   Correct answer: (B) 5√2 cm

   Diagonal = 5√2 cm.

7. Q7medium

   Area of a trapezium with parallel sides 8 and 12 cm, height 5 cm:

   • A40 cm²
   • B45 cm²
   • C50 cm²
   • D60 cm²
   Show answer & solution

   Correct answer: (C) 50 cm²

   Area = ½(a+b)×h = ½×20×5 = 50 cm².

8. Q8easy

   The volume of a cube with side 4 cm is:

   • A48 cm³
   • B64 cm³
   • C96 cm³
   • D16 cm³
   Show answer & solution

   Correct answer: (B) 64 cm³

   Volume = 4³ = 64 cm³.

Want the full set? Practise all 15 Mensuration questions →