The post of a street light is shaped like a truncated cone, as shown in the picture below. It is a large cone minus a smaller top cone. The large cone is 21 feet tall with base radius 1 foot. The smaller cone is 7 feet tall with base radius of 0.5 feet. (a) Find the volume (in cubic feet) of the large cone to the nearest tenth. cu. ft (b) Find the volume (in cubic feet) of the small cone to the nearest tenth. cu. ft (c) Find the volume (in cubic feet) of the post by subtracting the volume of the small cone from the volume of the large cone. Round your answer to the nearest tenth. cu. ft

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