Question 1057828
<font color=black size=3>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.</font>