A microscope has an objective lens with a focal length of16.22 mm and an eyepiece with a focal length of 9.40 mm. With the length of the barrel set at32.0 cm, the diameter of a red bloodcell's image subtends an angle of 1.43 mrad with the eye. If thefinal image distance is 32.0 cm fromthe eyepiece, what is the actual diameter of the red blood cell?