- How do I solve solve for r given the equation S=2pi rh +2pi r^2 by completing the square?

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36lbs.of potatoes cost 324.00 how much will 15 lbs. Cos? How many mL of a 1.35M solution of KOH is needed to neutralize 45.0 mL of a 0.65M solution of H2SO4? AWARDING BEST ANSWER SOON? If f x-(1/x) =(x^3-(1/x^3) find f (-x)? How many particles are in 2.10 moles of H2O? If 3.60 mL of aluminum hydroxide is used to neutralize 43.0mL of 2.5 M phosphoric acid , what is the molarity if the base? TEN POINTS AWARD?