A tube of toothpaste has been completely squeezed out in a long, unbroken straight line. For simplicity's sake, we assume that the tube had the shape of a 15 cm long cylinder with an inner diameter of 2 cm. The opening at one end of the cylinder has a diameter of 4 mm, and the line of toothpaste also forms a cylinder. How long is the line of toothpaste?A tube of toothpaste has been completely squeezed out in a long, unbroken straight line. For simplicity's sake, we assume that the tube had the shape of a 15 cm long cylinder with an inner diameter of 2 cm. The opening at one end of the cylinder has a diameter of 4 mm, and the line of toothpaste also forms a cylinder. How long is the line of toothpaste?