A right circular cylinder has a base whose area is 616 square feet. If the height of the cylinder is 9 feet, what is its lateral surface area? Use π

Question

anonymous · Answer

because the base whose area is 616 square feet,which Sb=pi*r^2
r=sqrt{S/(pi)}=sqrt{616/pi}
 lateral surface area=perimeter of the base* height=2pi*r*h=2pi*sqrt{616/pi}*9
put this into the caculator
finished!

anonymous · Answer

Idk if you calculated, but I got 1,408. is that correct?

anonymous · Answer

i don't have one nearby,but i think you are wrong, i guess it's around 735

anonymous · Answer

hmmm, I recalculated and got 795. Does that seem right?

anonymous · Answer

yep,if pi 3.14, the answer is 791. your answer is right!

anonymous · Answer

Thank you so much! :) You're awesome.

anonymous · Answer

you're welcome

anonymous · Answer

Wouldn't it be 792?