You have a part-time job painting block towers. Each black has dimensions of 5cm by 5cm by 5cm. You MUST paint all exposed faces. The paint comes in 250ml jars. Each jar covers 1m square. How many jars of paint will you need all together in order to cover a 2 block tower, a 7 block tower, a 15 block tower, a 20 block tower, and a 36 block tower? Determine a pattern rule that will help you solve the problem.