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1. Let's start by using the principles we've just learned in this section in order to find the volume of a sphere with radius "r". 2. Find the volume of the solid created by rotating the function below about the x-axis. W N f ( x ) = X / H f (x ) = 1 1 2 3 33. Find the volume of the solid created by rotating f (x) = v4 - x about the x-axis over the interval [0,4]. 4. Find the volume of the solid created by y = v4 - x2, y = 0, x = 0, and rotated about the y-axis.5. Find the volume of the solid created by f(x) = Vx and g(x) = _ over the interval [1,3] and rotated about the x-axis. 6. Find the volume of the solid bounded above by f (x) = x + 2, below by the x-axis, and rotated about the line y = -1 over the interval [0,3]