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Asked: 2021-08-02T19:10:07+05:30 In:

In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find: (i) the length of the arc .Q.5(1)

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Find the solution of the question 5(1) of exercise 12.2 of chapter areas related to circle ncert class 10 . Give me the easiest and simplest way to solve this question . Also find the best way to solve this question. In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find: (i) the length of the arc

areas related to circles ncertbest math ncert solutionexercise 12.2 ncertncert class 10th solution
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    1. Guru

      ution:

      Ncert solution class 10 chapter 12-3

      Given,

      Radius = 21 cm

      θ = 60°

      (i) Length of an arc = θ/360°×Circumference(2πr)

      ∴ Length of an arc AB = (60°/360°)×2×(22/7)×21

      = (1/6)×2×(22/7)×21

      Or Arc AB Length = 22cm

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