It is correct to say d=2r?
Is it possible you mean d=r•r. Because that is incorrect.
Answer:
72
Step-by-step explanation: 8 times 9 equals 72.
If all need to have a common denominator;
1/2 = 6/12
3/4 = 9/12
4/6 = 8/12
Answer: x=3
Step-by-step explanation: