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A cone has a base area of 3 in² and a lateral area which is 1.5 times bigger than the base area. The surface area of the cone is _____ in². 4.5 6.0 7.5 9.0 A cone has a base area of 3 in² and a lateral area which is 1.5 times bigger than the base area. The surface area of the cone is _____ in². 4.5 6.0 7.5 9.0 @Mathematics
surface area=3+1.5*3=7.5