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the area enclosed by a circular fountain is 78.57 square meters. What is the diameter of the fountain? Round your answer to the nearest meter.

Sagot :

RedRicin
Use the formula for the area of a circle and solve for the radius. (rounding to the nearest whole number)

[tex]A_O= \pi r^2 \\ 78.57 = 3.14r^2 \\ 25 = r^2 \\ \boxed{5 = r}[/tex]

And of course, if the radius of a circle is 5 meters, then the diameter is 10 meters.
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