If a cubic millimeter of blood contains 5.2*10^6 red blood cells, how many red blood cells are contained in 40 cubic milliliters of blood? Answer in scientific notation

To solve this problem, we need to use unit conversions and multiplication.

First, we need to convert cubic millimeters to cubic milliliters, since the initial given value is in cubic millimeters and the final answer should be in cubic milliliters.

1 cubic millimeter (mm³) = 0.001 cubic milliliters (mL)

Therefore,

1 mm³ / 0.001 mL = 1000 mm³/mL

Next, we can use this conversion factor to find out how many milliliters are in 40 cubic millimeters:

40 mm³ * (1 mL / 1000 mm³) = 0.04 mL

Now we can multiply the number of red blood cells in one cubic millimeter by the volume of blood in 40 cubic milliliters, in order to find the total number of red blood cells in 40 mL of blood:

5.2*10^6 red blood cells/mm³ * 0.04 mL = 2.08*10^5 red blood cells

Therefore, there are 2.08*10^5 red blood cells in 40 cubic milliliters of blood.