The diameter of a circular glass lens is 8.7 centimeters. Paige uses the edge of the lens to trace a circle on a sheet of paper. What is the estimated circumference of the circle?

C=2πr=2·π·8.7≈54.66371

Step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it