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

1. Add two more holes to the object. Currently, the object only has one hole. To meet the requirement, two more holes should be added. 

2. Arrange the three holes in a triangular formation. After adding the two additional holes, ensure they are arranged in a triangular formation. This means one hole should be at the top with the other two holes at the bottom, forming a triangle.