Acircle has a radius of 9 cm and a sector of the circle has an arc length of 9.7 cm. the angle at the centre of the sector is x°.calculate the value of x to the nearest degree.

  Value of x = 62

Explanation:

 Angle in radian = Arc length/ Radius

Arc length = 9.7 cm

  Radius = 9 cm

   Angle in radian = Arc length/ Radius = 9.7/9 = 1.078 radians

  2π radians = 360°

  1 radian = 57.296°

  1.078 radians = 1.078 x 57.296 = 61.75° = 62°

  Value of x = 62                        

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