The surface area A of a steel cylinder is given by the formula
A= 2.pi.r²+2.pi. r h
Where r is the radius and h the height
a) find the required radius if A = 12500mm² , and h = 150mm
b) Determine the number of 2.5 liter tins of paint that are needed to coat 500 cylinders with a thickness of 20µm
Solution This solution is FREE courtesy of BrainMass!
Please see the attachment.