The length is the circumference of the cylinder, and the width is the height of the cylinder.

Side area =62.8×8=502.4 cm2.

Radius = perimeter. ÷ 6.28 = 62.8÷ 6.28 =10cm

Two bottom areas =3. 14× 10? ×2=628 square centimeters

Surface area = 502.4+628 =1130.4 cm2.

If it helps you, I hope to adopt it in the upper right corner.