We are asked to find out what 3D shape would be formed if the following 2D shapes were rotated around the given axes.
Shape (a)
If you rotate such a rectangular shape around the axis then it would make a 3D cylindrical shape.
So, the answer is 3D Shape Cylinder.
Shape (b)
If you rotate such a triangular shape around the axis then it would make a 3D conic shape.
So, the answer is 3D Shape Cone.
Shape (c)
If you rotate such a circular shape around the axis then it would make a 3D Torus shape.
So, the answer is 3D Shape Torus.
