What is the approximate circumference of a circle with a radius of 42.1 km? A. 5565.4 km B. 1391.3 km C. 264.4 km D. 132.2 km

c.264.4 that should answer your question

Circumference of circle = 2*pi*r
                                     = 2*22/7*42.1
                                     = 264.4 km

Therefore, the circumference of the circle is 264.4 km