Question 1031082
Identical to #1031062.


(a)  You have the formula so you just make the substitution and evaluate.


(b)  The skill is, "Solve for any variable in a formula".



The basic formula is  {{{V=h*pi*r^2}}}, from which you can solve for h or solve for r.  You are given one of them, as  {{{r=sqrt(V/(pi*h))}}}.  Question #b asks for h when V and r are given.  SOLVE THE FORMULA FOR h.  You need Multiplicative Inverse Property and Multiplication Property of Equality.