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Grade: 11

                        

Meerut is 64km from Delhi. Find the angle (7in degree) subtended at the centre of the earth by the arc joining these two towns. The earth is regarded as a sphere of 6336km radius

2 years ago

Answers : (1)

Arun
24738 Points
							
We know that   θ      *   2πr    = the perimeter of the arc.
                     360
... r = 6336 (given)
perimeter of the arc = 64 (given)

  θ      *   2πr    =  64
360
  θ      *   2(3.14)(6336)    = 64
360
... θ =       64 * 360         
            2(3.14)(6336)
θ = 0.579 degrees
  = 34.74​ minutes
2 years ago
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