What is the surface area of this cylinder? Use π ≈ 3.14.
Remember that
Surface area of a cylinder:
Surface area 
= 
Atop + Abottom + Aside 
Find the radius and height of the cylinder.
Find the area of the circle on the top of the cylinder. Use 3.14 for π.
The circle on the bottom of the cylinder is the same, so:
Find the circumference of the top circle.
Now find the area of the curved surface. The curved surface is a rectangle. One side length is the height, and the other side length is the circumference of the circle.
Now add the areas to find the surface area of the cylinder.
Surface area 
= 
Atop + Abottom + Aside 


≈ 



≈ 
282.6 
The surface area of the cylinder is about 282.6 square millimeters.