Question

find the diameter of a circle whose circumference is 63.8 M

Answer 1

Let Radius of Circle be r

We are given , 2*22/7*r = 63.8
        so, r = 63.8*7/44
            
         So, Diameter, d = 2*63.8*7/44 = 63.8*7/22 = 20.3 m

Answer 2

Hope it helps you...