81.8824
(square root of) 15 / 9 is the answer
Well, isn't that a happy little math problem! If you take 81 and divide it by 15, you'll find that it goes in 5 times with a remainder of 6. Remember, there are no mistakes in math, just happy little accidents!
15% of 81= 15% * 81= 0.15 * 81= 12.15
81
81
116.6173
216
1, 3, 5, 9, 15, 27, 45, 81, 135, 405
20.25
9
81