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Class X Mathematics

Chapter 11: Areas Related to Circles

Standard NCERT & CBSE aligned study curriculum. Master concepts, track accuracy, revise weak areas, and challenge yourself with 9 customized practice modes.

Example 1

Area of a Sector

Find the area of a sector of a circle with radius 6 cm if angle of sector is 60 degrees. (Use pi = 22/7)
rTangent

Calculation Steps:

  1. 1Identify parameters: r = 6 cm, θ = 60 degrees.
  2. 2Apply formula: A = (θ/360) * pi * r².
  3. 3Calculation: (60/360) * (22/7) * 6 * 6 = (1/6) * (22/7) * 36 = (22/7) * 6 = 132/7 ≈ 18.86 sq cm.
Solution18.86 sq cm