Need answer asap The surface area of a cone with radius r units and slant height s units is shown below:

Surface area = 3.14(rs + r2)

Part A: If r = 6 units and s = 4 units, write an expression that can be used to calculate the surface area of the cone. (4 points)

Part B: What is the surface area of the cone? Show your work. (6 points)

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

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How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy