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Radius of a cylinder increases at 0.2cm/s,and the hieght decreases at 0.5cm/s.find the rate of volume, when radius is 8cm & hieght 12cm.? Calculate the change that occurs in the particles electrostatic potential energy, when the particle is:? How do i cancel my bank accountl? Express the complex number in trigonometric form. -2? A geometric sequence begins 15, 3, 3/5, 3/25, 3/125,.... Find the common ratio r for this sequence.? additional questions in comments.?