The volume, V, of a sphere in terms of its radius, r, is given by V (r) = 77³. Express r as a function of V, and find the radius of a sphere with volume of 250 cubic feet. Round your answer for the radius to two decimal places. Enclose numerators and denominators in parentheses. For example, (a - b)/(1+n). Include a multiplication sign between symbols. For example, a π.

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