A red blood cell is 8 μm in diameter. If drawn 100 times larger than its actual size, what diameter will the drawing be in mm?
A. 0.08 mm
B. 0.8 mm
C. 8 mm
D. 80 mm
First, you need to know that 1 mm = 1000 μm. So when the red blood cell is drawn 100 times larger than its actual size, the drawn size is 8 * 100 = 800 μm = 0.8 mm. So the right answer is B.
