Question 18: (4 points) The volume, V, of a sphere in terms of its radius, r, is given by V (r) = = mrs. Express r as a function of V, and find the radius of a sphere with volume of 300 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 * T. r (V) = sphere with volume 300 cubic feet has radius feet