SOLUTION: A soup can has a diameter of 8 cm and a height of 10.5 cm. How much metal is needed to make the can?

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Question 1057828: A soup can has a diameter of 8 cm and a height of 10.5 cm. How much metal is needed to make the can?



Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
The diameter is 8 cm, so the radius is 4 cm.


Let's find the surface area of the can.


SA = pi*r^2*h


SA = pi*4^2*10.5


SA = 168pi


SA = 527.787565803086


The approximate surface area is 527.787565803086 square cm


We need approximately 527.787565803086 square cm of metal. This is assuming we don't have any wasted metal and everything goes perfectly. In the real world, waste is inevitable. So let's round this up to 528 square cm.