Answer
Please see the work below.
Work Step by Step
We can find the volume of a cell as follows
$V_{cell}=\frac{4}{3}\pi(R_{cell})^3$
$V_{cell}=\frac{4}{3}\pi(\frac{D_{cell}}{2})^3$
We plug in the known values to obtain:
$V_{cell}=\frac{4}{3}\pi(\frac{10\times 10^{-6}}{2})^3$
$V_{cell}=5.24\times 10^{-16}m^3$
