SOLUTION: Can anyone please tell me how to solve this equation 36-1/9r^2=0

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Question 416668: Can anyone please tell me how to solve this equation
36-1/9r^2=0
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
solve this equation
36 - 1%2F9r^2 = 0
subtract 36 from both sides
-1%2F9r^2 = -36
get rid of the negatives, multiply both sides by -1
1%2F9r^2 = 36
Find the square root of both sides, results:
1%2F3r = 6
multiply both sides by 3, results
r = 6 * 3
r = 18
:
:
Check solution in original equation
36 - 1%2F9*18^2 = 0
36 - 1%2F9*324 = 0
36 - 36 = 0