Question

What is the total volume of 25,000,000,000,000 red blood cells if each has a volume of 9.2 x 10*-11 milliliters?

Answer 1

To find the total volume of 25,000,000,000,000 red blood cells, each with a volume of \(9.2 \times 10^{-11}\) milliliters, you can use the following formula:

\[
\text{Total Volume} = \text{Number of Cells} \times \text{Volume of One Cell}
\]

Now, substituting the given values:

\[
\text{Total Volume} = 25,000,000,000,000 \times 9.2 \times 10^{-11}
\]

First, we can convert \(25,000,000,000,000\) into scientific notation:

\[
25,000,000,000,000 = 2.5 \times 10^{13}
\]

Now substituting this back into the equation:

\[
\text{Total Volume} = (2.5 \times 10^{13}) \times (9.2 \times 10^{-11})
\]

When multiplying in scientific notation, we multiply the coefficients and add the exponents:

\[
= 2.5 \times 9.2 \times 10^{13 - 11}
\]

Calculating the coefficient:

\[
2.5 \times 9.2 = 23
\]

Now combining the exponents:

\[
10^{13 - 11} = 10^{2}
\]

Putting this all together:

\[
\text{Total Volume} = 23 \times 10^{2} = 2300
\]

Thus, the total volume of the red blood cells is:

\[
\boxed{2300} \text{ milliliters}
\]