Answer
See the explanation
Work Step by Step
$V(r)=18,500(0.25-r^2), 0\leq r\leq0.5$
a.$V(0.1)=4440$
$V(0.4)=1665$
b. An artery of radius $0.1$ will have the velocity of $4440cm/s$.
-An artery of radius $0.4$ will have the velocity of $1665cm/s$.
c.
$\begin{array}{ll}
r&V(r)\\
0&4625\\
0.1&4440\\
0.2&3885\\
0.3&2960\\
0.4&1665\\
0.5&0
\end{array}$
d.$V(0.1)=4440$,
$V(0.5)=0$,
$\Delta V=-4440$
