UPSKILL MATH PLUS
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Find the total surface area of the closed cylindrical water tank used in a company that is 49 \(m\) in diameter and 11 \(m\) in height. Also, calculate how much metal was actually used if 5\(\%\) of the metal was wasted in making the tank.
(i) Total surface area of the water tank \(=\) \(m^2\)
(ii) Area of metal used to make the water tank \(=\) \(m^2\)
[Note: Round off your answer to two decimal places.]