Question

You walk around a circle which has a diameter of 70m.How far you have walked?

Answer 1

I walked around a circle with diameter of 70m  
 Radius = 70/2 = 35m
The distance walked = The circumference of the circle
= 2pie r 
=2* 22/7* 35m
=2* 22*5 m
= 220 m 
Therefore the distance I have walked = 220 m

Answer 2

given,
diameter of the circle = 70 m
therefore radius = 70 /2 = 35 m
now,
circumference of the circle ,
= 2πr
= 2 * 22 / 7 * 35
= 2 * 22 * 5
= 44 * 5
= 220 m
therefore we will walk 220 m...
       i hope that my answer will help u.............................^_^