Question

The circumferance of a circle is 125.6 cm. Find its radius and diameter

Answer 1

circumference of circle 
2*22/7*r=125.6
44/7*r=125.6
    r=(125.6*7)/44
    r=19.98
diameter =2r 
          d=2*19.98
          d=39.96 (approx)