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To solve this problem, we know that the volume of a cylinder is given by the formula V = πr^2h, where r is the radius and h is the height.
Given that the volume of the cylinder is 36 cm^3 and the height of the cylinder is equal to the sphere's diameter (which is twice the sphere's radius), we can write the following equation: 36 = πr^2(2r).
Simplifying this equation, we get: 36 = 2πr^3.
Solving for r, we find that r = ∛(18/π) = ∛(18) / ∛π.
Now, to find the volume of a sphere with the same radius, we use the formula for the volume of a sphere: V = (4/3)πr^3.
Substitute the value of r we found earlier, we get: V = (4/3)π(∛(18))^3 = (4/3)π(18) = 24π ≈ 75.4 cm^3.
Therefore, the volume of the sphere with the same radius as the cylinder and the height equal to the sphere's diameter is approximately 75.4 cm^3.