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  3. let k be a cone with a circular bottom, that has a

Let K be a cone with a circular bottom, that has a radius r, and the...

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Advance Math

Let K be a cone with a circular bottom, that has a radius r, andthe apex is directly above the center of the bottom. Let hrepresent the height of the cone. Show that the surface area of thecone K without the bottom is equal to

pi * r * sqrt(r^2 + h^2) .

(Use that a sector that is given with angle ? in a circle withradius R has the area  (? * R^2)/2

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