Step-by-step explanation: As we know, the relationship between the diameter and radius, is that it is 2 times the amount of it. Now in your particular equation, 36 is radius^2. So all we have to do, is take the square root of 36, and then multiply that number by 2, to find the diameter. The square root of 36 is 6, so 6 x 2= 12 m, which is the diameter.
Please let me know if you have any questions, thank you!
