Question 470631
The volume of the cylindrical cane is given by the formula:{{{V=pi*r^2*h}}}.

Since the volume does not change we can write:

{{{pi*r^2*h[1]=pi*(.25)^2*r^2*h[2]}}}<=>{{{h[1]/h[2]=(.25)^2=6.25}}}%.

Answer:If the radius is increased by 25% the height is decreased by 6.25%.