A decimeter is one tenth of meter.
The formula to measure the volume of cylinder is V = h(r^2), where v = volume, r = radius, and h = height.
First, we plug those numbers into the formula. Remember that radius is one half of the diameter.
V = 14(2.5/2)^2
Simplify the problem.
V = 21.875
Now, let's convert this answer from centimeters to decimeters.
Since a decimeter is one tenth of a meter, we can divide the answer by ten.
= 21.875/10
Therefore, your answer is 2.1875dm3