Based on the answers provided, here are the corrections needed for the 3D object:

1. Adjust the proportions of the rectangle so that its length is clearly approximately 5 times its width. This will address the uncertainty in question 2.

2. Modify the size of the cylinder so that its radius is visibly about 1/3 of the width of the rectangle. This will clarify the uncertainty in question 4. 

Please ensure that these changes do not affect the overall composition of the object, which is correctly an extruded rectangle with a cylinder attached to one side, very close to the edge.