Question

hello , i have no idea on how to solve this question again... somebody pls help me asap.... i need u here with me now...pls pls pls

Right circular cylindrical tin cans are to be manufactured to contain a given volume .The end pieces of the can are cut out from square pieces of tin with the corners wasted. If h is the height of the can and r its radius

a)write down the least area of tin required (including the waste) in the making of each can.
b)determine the ratio of the height to diameter for the most economical production..

Answer 1

anybody ? got idea on how to solve this ?

Answer 2

if you go to this link --there is an example of getting the minimum amount of tin used for the tin can
http://de2de.synechism.org/c3/sec38.pdf

Answer 3

thank youuuu !!!!!!