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The radius of the beach ball is 4 inches (half of the diameter).
Volume of a cone = 1/3 * π * r^2 * h
= 1/3 * π * 4^2 * 8
≈ 134 cubic inches
The volume of the cone is approximately 134 cubic inches.
The cone with the same radius and a height of 8 inches would fit into the beach ball approximately 3 times (assuming the cone is not compressed or deformed when placed inside the beach ball).