Paint Coverage for a Cylinder

A closed cylinder has a radius of 4 cm and a height of 10 cm. You need to find out how much paint will be required to cover the exterior surface of the cylinder if one can of paint covers 100 square centimeters. What is the minimum number of cans of paint needed?

To calculate the surface area of a closed cylinder, you can use the formula:

$$ A = 2\pi r(h + r) $$

where $r$ is the radius, and $h$ is the height of the cylinder.