A set production designer creates a right circular cylindrical pillar. The designer knows the amount of material used for the surface of the pillar and needs to find the height for a reinforcement rod.
Use A = (2) h + ar?, where r represents the radius, h represents the height of the pillar, and A represents the
surface area of the pillar. What is a formula for h in terms of the other variables that can be used to find the height?
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