the S.A of the top surface of the water in a circular swimming pool is about 206 ft estimate the radius of the pool to the nearest foot
The surface area of the top of a cylindrical object is a circle. \[A = πr^{2}\]\[206 = πr^{2}\]JJust solve for r :)
^What @Calcmathlete said
what is "r"
r = radius
well yeah but is "r" 206?
A = 206 as @Calcmathlete implied above
We know that \(A = \pi r^2\) is the formula for Area of a circle. Replacing A with 206 in the formula gives \(206 = \pi r^2\) which implies that A = 206. The problem states: the surface area of the top surface of the water in a circular swimming pool is about 206 ft. In other words, \(A=206\).
The only thing left to do is solve for r. You can use 3.14 for \(\pi\).
thanks i passed my test @hero
congrats
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