How would you estimate the length of a row of 10000 loonies?

To estimate the length of a row of 10,000 loonies, first determine the diameter of a loonie, which is approximately 2.0 centimeters. Multiply the number of loonies by the diameter: 10,000 loonies x 2.0 cm = 20,000 cm. Finally, convert this measurement to meters by dividing by 100, resulting in an estimated length of 200 meters.