Question: 10. [5 marks) A conical witch's hat is being dipped in reflective paint to cover the outside. The volume of the witch's is given by

10. [5 marks) A conical witch's hat is being dipped in reflective paint to cover the outside. The volume of the witch's is given by V = 2ar" where r is the base radius of the witch's hat. Using linear approximations estimate the volume of paint needed to add a 0.1mm layer to the outside of the witch's hat if its radius is 150mm

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