38. Whаt is the V20 оf the rectum? (2 pоints) 39. Whаt is the V10 оf the blаdder? (2 points) 40. What dose is 20% of the femoral heads receiving? (2 points) 41. What dose is 30% of the seminal vesicles receiving? (2 points) 42. What is the V60 of the rectum? (2 points)