Question
Cylinder A has radius r and height h. Cylinder B has radius 2r and height 2h. How many times greater is the surface area of Cylinder B than the surface area of Cylinder A?
I have no idea how to start doing this problem. Are there any tips on how to start?
I have no idea how to start doing this problem. Are there any tips on how to start?
Answers
bobpursley
surface are cylinded = 2*PI*(2r)+2PI*r*h
that is if the cylinder ends are counted.
Surface area of lateral surface only: PI*2r*h
so if it is a cylinder with ends open, now begs the question does the interior surface area matter? If so, double the above.
if exterior lateral side area only, then Area= PI*2(2r)*2H
looks like Area quadrupled.
that is if the cylinder ends are counted.
Surface area of lateral surface only: PI*2r*h
so if it is a cylinder with ends open, now begs the question does the interior surface area matter? If so, double the above.
if exterior lateral side area only, then Area= PI*2(2r)*2H
looks like Area quadrupled.
Ya ,om
Ya mom
Ya mom
4 times greater hope this helps
Scarlett
2*2=4
(educated guess)= 4
(educated guess)= 4