Question

find the radius of the circular field whose circumference is 8.8 km please help

Answer 1

Circumference = 2πr
8.8= 44/7r
88/10*7/44= r
7/5=r
1.4= r

Answer 2

ANSWER 
= 1.40056 KM 

------------  EXPLANATION --------------------------


$C = 2 \pi r$


= $r = \frac{C}{2 \pi } = \frac{8.8}{2. \pi } == 1.40056 km$