What is the length of the circumference of a circle with diameter of 6.2cm?

Remember the circle equation.

C = pi *d

pi = 3.141592....

d = 6.2 cm

Hence

C = 3.141592... X 6.2 cm

C = 19.7787445.... cm

C ~ 19.79 cm To nearest hundredth and 2 d.p.