Marketing Golf Balls. A golf ball manufacturer has determined that a newly developed process results in a ball that lasts roughly twice as long as a ball produced by the current process. To illustrate this advance graphically, she designs a brochure showing a

“new” ball having twice the radius of the “old” ball.

a. What is wrong with this depiction?

b. How can the manufacturer accurately illustrate the fact that the

“new” ball lasts twice as long as the “old” ball?