Answer :
V=(1/3)hpir^2
h=9
r=3
V=(1/3)(9)(3.14)(3^2)
so you aer right because 3^2=9
well, the rounding should be told to you by your teacher
sometimes they don't want you to round
since they told you to use 3.14 for pi, I don't think you should round
just do 84.78 cubic feet
h=9
r=3
V=(1/3)(9)(3.14)(3^2)
so you aer right because 3^2=9
well, the rounding should be told to you by your teacher
sometimes they don't want you to round
since they told you to use 3.14 for pi, I don't think you should round
just do 84.78 cubic feet