A container in the shape of a right circular cylinder is $$\frac{1}{2}$$ full of water. If the volume of water in the container is 36 cubic inches and the height of the container is 9 inches, what is the diameter of the base of the cylinder, in inches?
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A$$\frac{16}{9\pi}$$
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B$$\frac{4}{\sqrt{\pi}}$$
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C$$\frac{12}{\sqrt{\pi}}$$
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D$$\sqrt\frac{2}{\pi}$$
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E$${4}\sqrt\frac{2}{\pi}$$
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正确答案: E