NotSoSmart  Feb 1, 2018

2+0 Answers




Area   =  pi * r^2   ....so  we have


108.94  =  pi * r^2      divide both sides by pi


108.94 / pi  = r^2      take the square root of both sides


√ [ 108.94 / pi ]  =  r  ≈  5.89 ft 



4.  Note, NSS....we don't need to do much math here....logic will suffice


From  a  positive radical on the right, we CANNOT  get a negative answer....thus....the 5x  on the left side CANNOT evaluate to a negative whenever we plug in  an x value.....thus, x CANNOT be negative


Notice that the first, second and fourth answers will produce at least one negative outcome for 5x


So....by a process of elimination, the second answer is the only one that is any good


Do you see that???.....sometimes....logic is BETTER than MATH  !!!



cool cool cool

CPhill  Feb 1, 2018

wow i do see oh my gosh you make it so simple more!! thank you so much

NotSoSmart  Feb 1, 2018

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