6. the answer is 4. because u find the diameter by dividing by 2.
7. answer = 8 , the radius is 4 . so u need to multiply 2 times 4. 2 times 4 =8.
The answer is 100 degrees.
36, |-12|=12 and |-3|= 3. Using inverse operations, we multiply instead of dividing and get 36.