Friday 11 December 2015

LENGTH OF AN ARC 1


Find radius if the length of an arc of the circle is /15 cm.

Solution

L= /15  , r = ?

L = r
      180

/15  = r
         180

180  x /15  = r  x   180   
                    180


180  =
    15      
                    
180  =
    15  

180   =  
    15      


r = 12cm

Hence radius is 12 cm


TRY THIS………………..


Find radius if the length of an arc of the circle is /30 cm.

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