Answer
\[2.88\times {{10}^{13}}\]
Work Step by Step
The amount of blood in the body of a \[180\] pound person can be calculated as,
\[\begin{align}
& 1\,\,\text{pound}=3.2\times {{10}^{4}}\,\text{ml} \\
& 180\,\,\text{pound}=180\times 3.2\times {{10}^{4}}\,\text{ml} \\
& =5.76\times {{10}^{6}}\,\text{ml}
\end{align}\]
The number of red blood cells in the body of a person is calculated as follows,
\[\begin{align}
& 1\,\,\text{ml}=5\times {{10}^{6}} \\
& 5.76\times {{10}^{6}}\,\,\text{ml}=5.76\times {{10}^{6}}\times 5\times {{10}^{6}} \\
& =2.88\times {{10}^{13}}
\end{align}\]
The number of red blood cells in the body of a \[180\]pound person is \[2.88\times {{10}^{13}}\]
