Good morning, could someone help me with this activity, they ask me to obtain the inner and outer radius from the graph they give me, as well as the limits and their differential, if the graph rotates in different directions.

Volume of revolution Solids Outer radios = distance from the axis of rotation to the farthest point of the rectangle . inher radius - distance to the axis of the nearest point of the rectangle a Turn at x - - 2 Outer radios = 2 + F ( X ) Inner rogius = 2 + g (x ) Limits - 2 to 4 diff - dx FOX ) g(x) 4 b ) Turn at *= # Outer radios = 7 - f ( x ) Inner radius = 7 - 9( x ) b Turn at ull Limits - 0 +0 7 Outer radius = 2 diff = dx Inner radiust ? Limits + 2