Mathematics The shape of top of a table in a restaurant is that of a sector of  a circle with the centre O and ∠BOD = 90°, BO = OD. Find the perimeter of table.

 The shape of top of a table in a restaurant is that of a sector of  a circle with the centre O and BOD = 90°, BO = OD. Find the perimeter of table.


  1. A
      402.6
  2. B
      256
  3. C
      580
  4. D
      780  

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    Solution:

    We have angle made by sector at centre = 360° 90° = 270°
    r = 60cm
    Perimeter of table = 120 + 282.6
    = 402.6cm
       
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