The side area of a cylinder is 25.12 square decimeters, the height is 8 decimeters, find the surface area of the cylinder!

The side area of a cylinder is 25.12 square decimeters, the height is 8 decimeters, find the surface area of the cylinder!

Perimeter = 25.12 △ 8 = 3.14 decimeters
Radius = 3.14 △ 3.14 △ 2 = 0.5 decimeter
Bottom area = 3.14x0.5 & sup2; = 0.785m2
Surface area = 25.12 + 2x0.785 = 26.69 square decimeters