Question

A circular path of radius 20 m is situated in 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 string of each phone

Answer 1

In a right angle triangle BEO we get

OE2+BE2=OB2. (pythagoras theorem)

x2+3x2=400

X2=100

X=10m

Now

a=2root3*10

=20root3 m