A circular park of a radius 20m is situated in a colony. Three boys ankur syed and david are sitting at equal distance on its boundary each having a toy telephone in his hands to talk each other. Find the length of the string of each phone
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40πm
length of string = circumference of r=20 ,so c=2×π×20=40πm
length of string = circumference of r=20 ,so c=2×π×20=40πm
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