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Asked: 2021-08-02T19:14:41+05:30 In:

In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find:(ii) area of the sector formed by the arc Q.5(2)

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Today i am solving the areas related to circle of ncert class 10 its very hard to solve this question of exercise 12.2 question number 5(2) ,Please help me to find out the easiest  and best way to solve this question. In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find:(ii) area of the sector formed by the arc

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

       

      Ncert solution class 10 chapter 12-3

      ii) It is given that the angle subtend by the arc = 60°

      So, area of the sector making an angle of 60° = (60°/360°)×π r2 cm2

      = 441/6×22/7 cm2

      Or, the area of the sector formed by the arc APB is 231 cm

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