A sperm cell has a tail 40 um long and a student draws it 40 mm long calculate the magnification

The formula for calculating magnification is:

Magnification = Size of drawing / Actual size

Size of drawing = 40 mm

Actual size = 40 micron meter

Convert 40 mm to micron unit: 40 * 1000 = 40,000 micron

Magnification = 40,000 / 40 = 1000.

The magnification is 1000 X.

This answer means that the drawing is 1000 times bigger than the actual size of the cell.