A snowman is made from three spheres of packed snow stacked on one another. Assume each sphere has a uniform volumetric mass density that is three quarters that of water. The volumetric mass density of water is ?????? = 1 (?/??). The bottom sphere has a radius of 50 cm. The middle sphere has a radius of 35 cm. The top sphere has a radius of 20 cm. The formula for the volume of a sphere is ???ℎ??? = (4/3)??^3. How far above the ground is the center of mass of the snowman?

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