Divide both sides of the equation by 6. On the left you will get 324 and on the right you will eliminate 6 and get a^2.
The only way to get rid of an exponent is to square root it, and whatever you do to one side you have to do to the other. The square root of 324 is 18 and that is your answer.
Well, if you take x to be 25 seconds, there are 2.4x in 1min. So, that multiplied by 60, would be 144x. Therefore, 1/4 multiplied by 144x should be the answer.
------------------------------------------------------------- Answer: The ratio of the two circles = 1 :5 -------------------------------------------------------------
