Question 898370
v for volume of a cylinder, {{{v=h*pi*r^2}}}


The problem exercise gives {{{r=4/2=2}}} METERS and {{{h=100}}} MILLIMETERS.


Volume of collected water, {{{v=100(1/1000)*pi*2^2}}} CUBIC METERS.
{{{4pi/10}}}
{{{2pi/5}}}
OR
{{{highlight((2/5)(pi))}}} cubic meters


How much the water rises in the tank was already given in millimeters, and you can find in
the volume calculation how the unit conversion was done, in case you want as meters.