SOLUTION: Given the area,A, of a circle, the radius can be found by the formula {{{r=sqrt((A)/(3.14))}}}. Find the radius of a circular dance floor if its area is 469 square feet. We have

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: Given the area,A, of a circle, the radius can be found by the formula {{{r=sqrt((A)/(3.14))}}}. Find the radius of a circular dance floor if its area is 469 square feet. We have      Log On

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Question 63022: Given the area,A, of a circle, the radius can be found by the formula r=sqrt%28%28A%29%2F%283.14%29%29. Find the radius of a circular dance floor if its area is 469 square feet.
We have to show all work and we can not use calculators.
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
A=SQRT469/3.14
......149.36
... _________________
314)46900.000
....314
....-----
....1550
....1256
....-------
.....2940
.....2826
.....--------
......1140
.......942
......-----------
.......1980
.......1884
----------------------------------------------------------------------
NOW FIND THE SQUARE ROOT OF 149.36
........12.22
......._______________
.......)149.36
......1)1
........-----
.....22)049
........044
........---------
.....242)0536
..........484
..........--------
...........52
----------------------------------------------------------
R=12.22 FEET.