4. For what vertex angle y does a cone whose slant height is 3 feet, enclose...

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4. For what vertex angle y does a cone whose slant height is 3 feet, enclose the largest possible volume? [Recall that a cone of height h whose base is a disk of radius r has volume V = r²h.] 6 3 ft 4 3 ft 4. For what vertex angle y does a cone whose slant height is 3 feet, enclose the largest possible volume? [Recall that a cone of height h whose base is a disk of radius r has volume V = r²h.] 6 3 ft 4 3 ft