Given:
[tex]\begin{gathered} \text{height(h)}=40\operatorname{cm} \\ \text{diameter(d)=28cm} \end{gathered}[/tex][tex]\begin{gathered} \text{radius(r)}=\frac{d}{2} \\ \text{radius(r)}=\frac{28}{2} \\ \text{radius(r)}=14\operatorname{cm} \end{gathered}[/tex][tex]\text{Total surface area=2}\pi(r)(h+r)[/tex][tex]\begin{gathered} \text{Total surface area=2}\times\frac{22}{7}\times14\times(40+14) \\ \text{Total surface area=}2\times22\times2\times54 \\ \text{Total surface area=}4752cm^2 \end{gathered}[/tex]
