Question: i dont know how to do Q b 4. A cone has height / and base radius r. a Show that the surface area of

i dont know how to do Q b

4. A cone has height / and base radius r. a Show that the surface area of the cone is nur( + \\ + 1 ). b Suppose that the height and radius are equal. Show that the surface area is 7/ ( 1 + V2)

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