Question

A circular park of 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.

Answer 1

Radius of park=20 m

We have to find Distance of Boundary.

Circumference=2πr

$2 \times \frac{22}{7} \times 20 \\ \\ = 125.71 \: m$

Distance of Boundary=125.71 m

They are sit at equal Distance.

And have same length of string.

So Each string Length.

$\frac{125.71}{3} = 41.9 \: m$

Approx=42 m

$\boxed{\mathbf{Length \:of \:String=42 \:m}}$