Since the width is , the radius of each circle is . So the area of a circle is or .
The net of a cylinder has a rectangle with its width= circumference of cylinder and length= height of cylinder because it is rolled up to make the cylinder.
So we know that the length = and the width =
Then the area of the rectangle is
The surface area is or the area all the individual shapes. So its the area of 2 circles + the area of 1 rectangle.